0 -26.7,29.4269,48.7513,-29.0919 3 AI_XOR2 -2.5,5 IN_01 IN_12

OUT3

angle 0.0 INPUT_BITS 2 5 AA_AND2 -3,-4 IN_01 IN_12

OUT4

angle 0.0 INPUT_BITS 2 7 AA_TOGGLE -20,6.5

OUT_01

CLICK_BOX -0.76,-0.76,0.76,0.76 angle 0.0 OUTPUT_BITS 1 OUTPUT_NUM 1 9 AA_TOGGLE -20,2.5

OUT_02

CLICK_BOX -0.76,-0.76,0.76,0.76 angle 0.0 OUTPUT_BITS 1 OUTPUT_NUM 0 11 GA_LED 5,5 N_in03 LED_BOX -0.76,-0.76,0.76,0.76 angle 0.0 13 GA_LED 5,-4 N_in04 LED_BOX -0.76,-0.76,0.76,0.76 angle 0.0 14 AA_LABEL -24.5,6.5 LABEL_TEXT A0 TEXT_HEIGHT 2 angle 0.0 15 AA_LABEL -24,2.5 LABEL_TEXT B0 TEXT_HEIGHT 2 angle 0.0 16 AA_LABEL 10.5,5 LABEL_TEXT S0 TEXT_HEIGHT 2 angle 0.0 17 AA_LABEL 9,-4 LABEL_TEXT C0 TEXT_HEIGHT 2 angle 0.0 18 AA_LABEL 1,19.5 LABEL_TEXT What are the truth tables for S0, C0 TEXT_HEIGHT 2 angle 0.0 114 AA_LABEL -9,15 LABEL_TEXT What function is this ? TEXT_HEIGHT 2 angle 0.0 1 0 -12,6,-12,6.5 6 1 6.5 2 1 -12,6,-5.5,6 3 IN_0 -12 0 -9.5 3 2 -18,6.5,-12,6.5 7 OUT_0 -12 0 3 -9.5,-3,-9.5,6 -3 4 6 1 4 -9.5,-3,-6,-3 5 IN_0 -9.5 3 2 0 -12,-5,-12,4 -5 4 2.5 2 4 1 1 -12,4,-5.5,4 3 IN_1 -12 0 2 -18,2.5,-12,2.5 9 OUT_0 -12 0 4 -12,-5,-6,-5 5 IN_1 -12 0 3 1 0.5,5,4,5 3 OUT 11 N_in0 4 1 0,-4,4,-4 5 OUT 13 N_in0 115.15,4.2209,243.841,-95.5897 2 AA_LABEL 162,-24 LABEL_TEXT C0 TEXT_HEIGHT 2 angle 0.0 6 AA_LABEL 165.5,-6 LABEL_TEXT Inputs: A0, B0, C0 Outputs: X0, Y1 TEXT_HEIGHT 2 angle 0.0 19 AA_LABEL 168,-61 LABEL_TEXT Y1 TEXT_HEIGHT 2 angle 0.0 20 AA_LABEL 144,-11.5 LABEL_TEXT What does this circuit do TEXT_HEIGHT 2 angle 0.0 22 AI_XOR2 159,-34.5 IN_05 IN_16

OUT7

angle 0.0 INPUT_BITS 2 23 AA_TOGGLE 141.5,-33

OUT_05

CLICK_BOX -0.76,-0.76,0.76,0.76 angle 0.0 OUTPUT_BITS 1 OUTPUT_NUM 0 24 AA_TOGGLE 141.5,-37

OUT_06

CLICK_BOX -0.76,-0.76,0.76,0.76 angle 0.0 OUTPUT_BITS 1 OUTPUT_NUM 1 25 AA_LABEL 137,-33 LABEL_TEXT A0 TEXT_HEIGHT 2 angle 0.0 26 AA_LABEL 137.5,-37 LABEL_TEXT B0 TEXT_HEIGHT 2 angle 0.0 27 AI_XOR2 177.5,-33.5 IN_08 IN_17

OUT11

angle 0.0 INPUT_BITS 2 28 AA_TOGGLE 166.5,-26

OUT_08

CLICK_BOX -0.76,-0.76,0.76,0.76 angle 0.0 OUTPUT_BITS 1 OUTPUT_NUM 0 29 AA_AND2 153.5,-46 IN_06 IN_15

OUT9

angle 270 INPUT_BITS 2 30 AA_AND2 170.5,-46 IN_08 IN_17

OUT10

angle 270 INPUT_BITS 2 31 AE_OR2 162.5,-54.5 IN_010 IN_19

OUT12

angle 270 INPUT_BITS 2 32 GA_LED 186,-33.5 N_in011 LED_BOX -0.76,-0.76,0.76,0.76 angle 0.0 33 GA_LED 162.5,-61 N_in312 LED_BOX -0.76,-0.76,0.76,0.76 angle 0.0 34 AA_LABEL 192.5,-34 LABEL_TEXT X0 TEXT_HEIGHT 2 angle 0.0 116 AA_LABEL 162.5,-15 LABEL_TEXT Observe how this circuit is built using the circuit from page 1 TEXT_HEIGHT 2 angle 0.0 118 AA_LABEL 140,-18 LABEL_TEXT (2 Page 1 circuits are combined) TEXT_HEIGHT 2 angle 0.0 5 0 149.5,-33.5,149.5,-33 -33.5 1 -33 2 1 149.5,-33.5,156,-33.5 22 IN_0 149.5 0 152.5 3 2 143.5,-33,149.5,-33 23 OUT_0 149.5 0 3 152.5,-43,152.5,-33.5 29 IN_1 -33.5 1 6 0 154.5,-43,154.5,-35.5 29 IN_0 -37 2 -35.5 1 1 154.5,-35.5,156,-35.5 22 IN_1 154.5 0 2 143.5,-37,154.5,-37 24 OUT_0 154.5 0 7 1 162,-34.5,174.5,-34.5 22 OUT 27 IN_1 169.5 4 4 169.5,-43,169.5,-34.5 30 IN_1 -34.5 1 8 0 171.5,-43,171.5,-26 30 IN_0 -32.5 1 -26 2 1 171.5,-32.5,174.5,-32.5 27 IN_0 171.5 0 2 168.5,-26,171.5,-26 28 OUT_0 171.5 0 9 0 153.5,-50.5,153.5,-49 29 OUT -50.5 2 1 161.5,-51.5,161.5,-50.5 31 IN_1 -50.5 2 2 153.5,-50.5,161.5,-50.5 153.5 0 161.5 1 10 0 170.5,-50.5,170.5,-49 30 OUT -50.5 2 1 163.5,-51.5,163.5,-50.5 31 IN_0 -50.5 2 2 163.5,-50.5,170.5,-50.5 163.5 1 170.5 0 11 3 180.5,-33.5,185,-33.5 27 OUT 32 N_in0 12 0 162.5,-60,162.5,-57.5 33 N_in3 31 OUT 235.95,-69.5368,438.657,-226.753 4 AA_LABEL 265.5,-87.5 LABEL_TEXT Observe similarity to Circuit on Page 2 TEXT_HEIGHT 2 angle 0.0 10 AA_LABEL 260,-97.5 LABEL_TEXT This input C0 is always =0 TEXT_HEIGHT 2 angle 0.0 35 AI_XOR2 282.5,-110 IN_013 IN_114

OUT15

angle 0.0 INPUT_BITS 2 36 AA_TOGGLE 265,-108.5

OUT_013

CLICK_BOX -0.76,-0.76,0.76,0.76 angle 0.0 OUTPUT_BITS 1 OUTPUT_NUM 1 37 AA_TOGGLE 265,-112.5

OUT_014

CLICK_BOX -0.76,-0.76,0.76,0.76 angle 0.0 OUTPUT_BITS 1 OUTPUT_NUM 1 38 AA_LABEL 260.5,-108.5 LABEL_TEXT A0 TEXT_HEIGHT 2 angle 0.0 40 AA_LABEL 261,-112.5 LABEL_TEXT B0 TEXT_HEIGHT 2 angle 0.0 41 AI_XOR2 301,-109 IN_016 IN_115

OUT19

angle 0.0 INPUT_BITS 2 42 AA_TOGGLE 290,-101.5

OUT_016

CLICK_BOX -0.76,-0.76,0.76,0.76 angle 0.0 OUTPUT_BITS 1 OUTPUT_NUM 0 43 AA_AND2 277,-121.5 IN_014 IN_113

OUT17

angle 270 INPUT_BITS 2 44 AA_AND2 294,-121.5 IN_016 IN_115

OUT18

angle 270 INPUT_BITS 2 45 AE_OR2 286,-130 IN_018 IN_117

OUT25

angle 270 INPUT_BITS 2 46 GA_LED 309.5,-109 N_in019 LED_BOX -0.76,-0.76,0.76,0.76 angle 0.0 47 AA_LABEL 316,-109.5 LABEL_TEXT X0 TEXT_HEIGHT 2 angle 0.0 48 AA_LABEL 291.5,-136.5 LABEL_TEXT TEXT_HEIGHT 2 angle 0.0 49 AI_XOR2 274,-156.5 IN_020 IN_121

OUT26

angle 0.0 INPUT_BITS 2 50 AA_TOGGLE 256.5,-155

OUT_020

CLICK_BOX -0.76,-0.76,0.76,0.76 angle 0.0 OUTPUT_BITS 1 OUTPUT_NUM 0 51 AA_TOGGLE 256.5,-159

OUT_021

CLICK_BOX -0.76,-0.76,0.76,0.76 angle 0.0 OUTPUT_BITS 1 OUTPUT_NUM 1 52 AA_LABEL 252,-155 LABEL_TEXT A1 TEXT_HEIGHT 2 angle 0.0 53 AA_LABEL 252.5,-159 LABEL_TEXT B1 TEXT_HEIGHT 2 angle 0.0 54 AI_XOR2 292.5,-155.5 IN_025 IN_126

OUT24

angle 0.0 INPUT_BITS 2 55 AA_AND2 268.5,-168 IN_021 IN_120

OUT22

angle 270 INPUT_BITS 2 56 AA_AND2 285.5,-168 IN_025 IN_126

OUT23

angle 270 INPUT_BITS 2 57 AE_OR2 277.5,-176.5 IN_023 IN_122

OUT27

angle 270 INPUT_BITS 2 58 GA_LED 301,-155.5 N_in024 LED_BOX -0.76,-0.76,0.76,0.76 angle 0.0 59 GA_LED 277.5,-183 N_in327 LED_BOX -0.76,-0.76,0.76,0.76 angle 0.0 60 AA_LABEL 273.5,-147.5 LABEL_TEXT TEXT_HEIGHT 2 angle 0.0 61 AA_LABEL 283,-183 LABEL_TEXT TEXT_HEIGHT 2 angle 0.0 62 AA_LABEL 287.5,-72.5 LABEL_TEXT What is this circuit? TEXT_HEIGHT 2 angle 0.0 63 AA_LABEL 287,-79 LABEL_TEXT Inputs: A0,A1, B0,B1 TEXT_HEIGHT 2 angle 0.0 64 AA_LABEL 327,-78.5 LABEL_TEXT Outputs: X0,X1,Y2 TEXT_HEIGHT 2 angle 0.0 65 AA_LABEL 307.5,-154.5 LABEL_TEXT X1 TEXT_HEIGHT 2 angle 0.0 66 AA_LABEL 278.5,-186 LABEL_TEXT Y2 TEXT_HEIGHT 2 angle 0.0 85 AA_LABEL 339,-73 LABEL_TEXT What "function" is being computed? TEXT_HEIGHT 2 angle 0.0 87 AA_LABEL 333,-87 LABEL_TEXT (Page 2 circuit is replicated twice here) TEXT_HEIGHT 2 angle 0.0 120 AA_LABEL 344,-92 LABEL_TEXT (Output from one Page 2 circuit is input to next one) TEXT_HEIGHT 2 angle 0.0 122 AA_LABEL 283,-101 LABEL_TEXT C0= 0 TEXT_HEIGHT 2 angle 0.0 13 0 273,-109,273,-108.5 -109 1 -108.5 2 1 273,-109,279.5,-109 35 IN_0 273 0 276 5 2 267,-108.5,273,-108.5 36 OUT_0 273 0 5 276,-118.5,276,-109 43 IN_1 -109 1 14 0 273,-112.5,273,-111 -112.5 2 -111 1 1 273,-111,279.5,-111 35 IN_1 273 0 278 5 2 267,-112.5,273,-112.5 37 OUT_0 273 0 5 278,-118.5,278,-111 43 IN_0 -111 1 15 1 285.5,-110,298,-110 35 OUT 41 IN_1 293 4 4 293,-118.5,293,-110 44 IN_1 -110 1 16 0 295,-118.5,295,-101.5 44 IN_0 -108 1 -101.5 2 1 295,-108,298,-108 41 IN_0 295 0 2 292,-101.5,295,-101.5 42 OUT_0 295 0 17 0 277,-126,277,-124.5 43 OUT -126 2 1 285,-127,285,-126 45 IN_1 -126 2 2 277,-126,285,-126 277 0 285 1 18 0 294,-126,294,-124.5 44 OUT -126 2 1 287,-127,287,-126 45 IN_0 -126 2 2 287,-126,294,-126 287 1 294 0 19 1 304,-109,308.5,-109 41 OUT 46 N_in0 20 0 264.5,-155.5,264.5,-155 -155.5 1 -155 2 1 264.5,-155.5,271,-155.5 49 IN_0 264.5 0 267.5 5 2 258.5,-155,264.5,-155 50 OUT_0 264.5 0 5 267.5,-165,267.5,-155.5 55 IN_1 -155.5 1 21 0 264.5,-159,264.5,-157.5 -159 2 -157.5 1 1 264.5,-157.5,271,-157.5 49 IN_1 264.5 0 269.5 5 2 258.5,-159,264.5,-159 51 OUT_0 264.5 0 5 269.5,-165,269.5,-157.5 55 IN_0 -157.5 1 22 0 268.5,-172.5,268.5,-171 55 OUT -172.5 2 1 276.5,-173.5,276.5,-172.5 57 IN_1 -172.5 2 2 268.5,-172.5,276.5,-172.5 268.5 0 276.5 1 23 0 285.5,-172.5,285.5,-171 56 OUT -172.5 2 1 278.5,-173.5,278.5,-172.5 57 IN_0 -172.5 2 2 278.5,-172.5,285.5,-172.5 278.5 1 285.5 0 24 1 295.5,-155.5,300,-155.5 54 OUT 58 N_in0 25 0 286.5,-165,286.5,-149 56 IN_0 -154.5 3 -149 2 1 286,-149,286,-133 45 OUT -149 2 2 286,-149,286.5,-149 286 1 286.5 0 3 286.5,-154.5,289.5,-154.5 54 IN_0 286.5 0 26 1 277,-156.5,289.5,-156.5 49 OUT 54 IN_1 284.5 3 3 284.5,-165,284.5,-156.5 56 IN_1 -156.5 1 27 0 277.5,-182,277.5,-179.5 59 N_in3 57 OUT -224.77,31.9276,-100.606,-64.3721 12 AA_LABEL -182,-28.5 LABEL_TEXT X TEXT_HEIGHT 2 angle 0.0 67 GA_LED -161,21 N_in246 N_in343 LED_BOX -0.76,-0.76,0.76,0.76 angle 0.0 68 GA_LED -148,21 N_in245 N_in344 LED_BOX -0.76,-0.76,0.76,0.76 angle 0.0 69 AA_LABEL -175.5,66 LABEL_TEXT 4-bit Full Adder: Chaining multiple 1-bit adders TEXT_HEIGHT 2 angle 0.0 70 AA_LABEL -174.5,13 LABEL_TEXT Output Sum bits TEXT_HEIGHT 2 angle 0.0 71 AA_LABEL -149,18 LABEL_TEXT bit 0 TEXT_HEIGHT 1 angle 0.0 72 AA_LABEL -206.5,22 LABEL_TEXT Overflow? TEXT_HEIGHT 1 angle 0.0 73 GE_LED_DISPLAY_4BIT -123.5,0.5 IN_045 IN_146 IN_247 IN_348 VALUE_BOX -1.9,-2.9,1.9,3.9 angle 0.0 CURRENT_VALUE 7 INPUT_BITS 4 NO_HOLD true SYNC_LOAD false UNKNOWN_OUTPUTS false 74 AA_FULLADDER_1BIT -148,27 IN_031 IN_B_035

OUT_044

carry_in30

carry_out29

angle 0.0 INPUT_BITS 1 75 AA_FULLADDER_1BIT -161,27 IN_032 IN_B_036

OUT_043

carry_in29

carry_out28

angle 0.0 INPUT_BITS 1 76 AA_FULLADDER_1BIT -172.5,27 IN_033 IN_B_037

OUT_042

carry_in28

carry_out39

angle 0.0 INPUT_BITS 1 77 AA_FULLADDER_1BIT -185.5,27 IN_034 IN_B_038

OUT_041

carry_in40 angle 0.0 INPUT_BITS 1 78 FF_GND -139.5,26

OUT_030

angle 0.0 OUTPUT_BITS 1 OUTPUT_NUM 0 79 DD_KEYPAD_HEX -200.5,57.5

OUT_031

OUT_132

OUT_233

OUT_334

KEYPAD_BOX_0 -3.65,3.05,-2.05,5.65 KEYPAD_BOX_1 -1.76,3.05,-0.16,5.65 KEYPAD_BOX_2 0.15,3.05,1.75,5.65 KEYPAD_BOX_3 2.05,3.05,3.65,5.65 KEYPAD_BOX_4 -3.65,0.15,-2.05,2.75 KEYPAD_BOX_5 -1.76,0.15,-0.16,2.75 KEYPAD_BOX_6 0.15,0.15,1.75,2.75 KEYPAD_BOX_7 2.05,0.15,3.65,2.75 KEYPAD_BOX_8 -3.65,-2.75,-2.05,-0.15 KEYPAD_BOX_9 -1.76,-2.75,-0.16,-0.15 KEYPAD_BOX_A 0.15,-2.75,1.75,-0.15 KEYPAD_BOX_B 2.05,-2.75,3.65,-0.15 KEYPAD_BOX_C -3.65,-5.65,-2.05,-3.05 KEYPAD_BOX_D -1.76,-5.65,-0.16,-3.05 KEYPAD_BOX_E 0.15,-5.65,1.75,-3.05 KEYPAD_BOX_F 2.05,-5.65,3.65,-3.05 angle 0.0 OUTPUT_BITS 4 OUTPUT_NUM 2 80 DD_KEYPAD_HEX -201,43.5

OUT_035

OUT_136

OUT_237

OUT_338

KEYPAD_BOX_0 -3.65,3.05,-2.05,5.65 KEYPAD_BOX_1 -1.76,3.05,-0.16,5.65 KEYPAD_BOX_2 0.15,3.05,1.75,5.65 KEYPAD_BOX_3 2.05,3.05,3.65,5.65 KEYPAD_BOX_4 -3.65,0.15,-2.05,2.75 KEYPAD_BOX_5 -1.76,0.15,-0.16,2.75 KEYPAD_BOX_6 0.15,0.15,1.75,2.75 KEYPAD_BOX_7 2.05,0.15,3.65,2.75 KEYPAD_BOX_8 -3.65,-2.75,-2.05,-0.15 KEYPAD_BOX_9 -1.76,-2.75,-0.16,-0.15 KEYPAD_BOX_A 0.15,-2.75,1.75,-0.15 KEYPAD_BOX_B 2.05,-2.75,3.65,-0.15 KEYPAD_BOX_C -3.65,-5.65,-2.05,-3.05 KEYPAD_BOX_D -1.76,-5.65,-0.16,-3.05 KEYPAD_BOX_E 0.15,-5.65,1.75,-3.05 KEYPAD_BOX_F 2.05,-5.65,3.65,-3.05 angle 0.0 OUTPUT_BITS 4 OUTPUT_NUM 5 81 HE_JUNC_4 -179.5,27 N_in040 N_in139 LED_BOX -0.25,-0.25,0.25,0.25 angle 0.0 82 GA_LED -185.5,21 N_in048 N_in341 LED_BOX -0.76,-0.76,0.76,0.76 angle 0.0 83 GA_LED -172.5,21 N_in247 N_in342 LED_BOX -0.76,-0.76,0.76,0.76 angle 0.0 86 AA_LABEL -142.5,-29 LABEL_TEXT Y TEXT_HEIGHT 2 angle 0.0 90 AA_LABEL -161,-37 LABEL_TEXT (X+Y) TEXT_HEIGHT 2 angle 0.0 93 AA_LABEL -153.5,-20 LABEL_TEXT Carry-in=0 TEXT_HEIGHT 1 angle 0.0 115 AA_LABEL -148,62.5 LABEL_TEXT Carry out from bit i goes to carry-in of bit i+1 TEXT_HEIGHT 2 angle 0.0 119 AA_LABEL -136,28 LABEL_TEXT C0=0 TEXT_HEIGHT 1 angle 0.0 123 AA_LABEL -143,32 LABEL_TEXT bit 0 TEXT_HEIGHT 2 angle 0.0 124 AA_LABEL -210.5,59.5 LABEL_TEXT Keypad TEXT_HEIGHT 2 angle 0.0 126 AA_LABEL -213.5,55.5 LABEL_TEXT 4-bit (Hex) TEXT_HEIGHT 2 angle 0.0 127 AA_LABEL -191.5,31.5 LABEL_TEXT bit 3 TEXT_HEIGHT 2 angle 0.0 131 AE_FULLADDER_4BIT -166,-23 IN_0126 IN_1127 IN_2128 IN_3129 IN_B_0110 IN_B_1111 IN_B_2112 IN_B_3116

OUT_0130

OUT_1131

OUT_2132

OUT_3133

carry_in65 angle 0.0 INPUT_BITS 4 139 AA_LABEL -164,-11 LABEL_TEXT Schematic for 4-bit Adder TEXT_HEIGHT 2 angle 0.0 141 FF_GND -155,-23.5

OUT_065

angle 0.0 OUTPUT_BITS 1 OUTPUT_NUM 0 147 DD_KEYPAD_HEX -182,-20.5

OUT_0126

OUT_1127

OUT_2128

OUT_3129

KEYPAD_BOX_0 -3.65,3.05,-2.05,5.65 KEYPAD_BOX_1 -1.76,3.05,-0.16,5.65 KEYPAD_BOX_2 0.15,3.05,1.75,5.65 KEYPAD_BOX_3 2.05,3.05,3.65,5.65 KEYPAD_BOX_4 -3.65,0.15,-2.05,2.75 KEYPAD_BOX_5 -1.76,0.15,-0.16,2.75 KEYPAD_BOX_6 0.15,0.15,1.75,2.75 KEYPAD_BOX_7 2.05,0.15,3.65,2.75 KEYPAD_BOX_8 -3.65,-2.75,-2.05,-0.15 KEYPAD_BOX_9 -1.76,-2.75,-0.16,-0.15 KEYPAD_BOX_A 0.15,-2.75,1.75,-0.15 KEYPAD_BOX_B 2.05,-2.75,3.65,-0.15 KEYPAD_BOX_C -3.65,-5.65,-2.05,-3.05 KEYPAD_BOX_D -1.76,-5.65,-0.16,-3.05 KEYPAD_BOX_E 0.15,-5.65,1.75,-3.05 KEYPAD_BOX_F 2.05,-5.65,3.65,-3.05 angle 0.0 OUTPUT_BITS 4 OUTPUT_NUM 6 153 DD_KEYPAD_HEX -143.5,-21.5

OUT_0110

OUT_1111

OUT_2112

OUT_3116

KEYPAD_BOX_0 -3.65,3.05,-2.05,5.65 KEYPAD_BOX_1 -1.76,3.05,-0.16,5.65 KEYPAD_BOX_2 0.15,3.05,1.75,5.65 KEYPAD_BOX_3 2.05,3.05,3.65,5.65 KEYPAD_BOX_4 -3.65,0.15,-2.05,2.75 KEYPAD_BOX_5 -1.76,0.15,-0.16,2.75 KEYPAD_BOX_6 0.15,0.15,1.75,2.75 KEYPAD_BOX_7 2.05,0.15,3.65,2.75 KEYPAD_BOX_8 -3.65,-2.75,-2.05,-0.15 KEYPAD_BOX_9 -1.76,-2.75,-0.16,-0.15 KEYPAD_BOX_A 0.15,-2.75,1.75,-0.15 KEYPAD_BOX_B 2.05,-2.75,3.65,-0.15 KEYPAD_BOX_C -3.65,-5.65,-2.05,-3.05 KEYPAD_BOX_D -1.76,-5.65,-0.16,-3.05 KEYPAD_BOX_E 0.15,-5.65,1.75,-3.05 KEYPAD_BOX_F 2.05,-5.65,3.65,-3.05 angle 0 OUTPUT_BITS 4 OUTPUT_NUM 4 184 GE_LED_DISPLAY_4BIT -160,-31.5 IN_0130 IN_1131 IN_2132 IN_3133 VALUE_BOX -1.9,-2.9,1.9,3.9 angle 0.0 CURRENT_VALUE 10 INPUT_BITS 4 NO_HOLD true SYNC_LOAD false UNKNOWN_OUTPUTS false 191 AA_LABEL -191.5,48 LABEL_TEXT bit 3 (MSB) TEXT_HEIGHT 1 angle 0.0 192 AA_LABEL -192,39.5 LABEL_TEXT bit 0 (LSB) TEXT_HEIGHT 1 angle 0.0 28 1 -168.5,27,-165,27 76 carry_in 75 carry_out 29 1 -157,27,-152,27 75 carry_in 74 carry_out 30 1 -144,27,-139.5,27 78 OUT_0 74 carry_in 31 0 -147,30,-147,54.5 74 IN_0 54.5 1 1 -195.5,54.5,-147,54.5 79 OUT_0 -147 0 32 0 -160,30,-160,56.5 75 IN_0 56.5 1 1 -195.5,56.5,-160,56.5 79 OUT_1 -160 0 33 0 -171.5,30,-171.5,58.5 76 IN_0 58.5 1 1 -195.5,58.5,-171.5,58.5 79 OUT_2 -171.5 0 34 0 -184.5,30,-184.5,60.5 77 IN_0 60.5 1 1 -195.5,60.5,-184.5,60.5 79 OUT_3 -184.5 0 35 0 -149,30,-149,40.5 74 IN_B_0 40.5 1 1 -196,40.5,-149,40.5 80 OUT_0 -149 0 36 0 -162,30,-162,42.5 75 IN_B_0 42.5 1 1 -196,42.5,-162,42.5 80 OUT_1 -162 0 37 0 -173.5,30,-173.5,44.5 76 IN_B_0 44.5 1 1 -196,44.5,-173.5,44.5 80 OUT_2 -173.5 0 38 0 -186.5,30,-186.5,46.5 77 IN_B_0 46.5 1 1 -196,46.5,-186.5,46.5 80 OUT_3 -186.5 0 39 1 -178.5,27,-176.5,27 81 N_in1 76 carry_out 40 3 -181.5,27,-180.5,27 77 carry_in 81 N_in0 41 0 -185.5,22,-185.5,24 82 N_in3 77 OUT_0 42 0 -172.5,22,-172.5,24 83 N_in3 76 OUT_0 43 0 -161,22,-161,24 67 N_in3 75 OUT_0 44 0 -148,22,-148,24 68 N_in3 74 OUT_0 45 0 -148,-0.5,-148,20 68 N_in2 -0.5 1 1 -148,-0.5,-126.5,-0.5 73 IN_0 -148 0 46 0 -161,0.5,-161,20 67 N_in2 0.5 1 1 -161,0.5,-126.5,0.5 73 IN_1 -161 0 47 0 -172.5,1.5,-172.5,20 83 N_in2 1.5 1 1 -172.5,1.5,-126.5,1.5 73 IN_2 -172.5 0 48 0 -156.5,2.5,-156.5,21 2.5 2 21 1 1 -186.5,21,-156.5,21 82 N_in0 -156.5 0 2 -156.5,2.5,-126.5,2.5 73 IN_3 -156.5 0 65 0 -155,-22.5,-155,-22 141 OUT_0 -22 1 1 -158,-22,-155,-22 131 carry_in -155 0 110 0 -161,-19,-161,-13 131 IN_B_0 -13 1 1 -161,-13,-134,-13 -161 0 -134 2 2 -134,-24.5,-134,-13 -24.5 3 -13 1 3 -138.5,-24.5,-134,-24.5 153 OUT_0 -134 2 111 0 -162,-19,-162,-13.5 131 IN_B_1 -13.5 1 1 -162,-13.5,-135,-13.5 -162 0 -135 2 2 -135,-22.5,-135,-13.5 -22.5 3 -13.5 1 3 -138.5,-22.5,-135,-22.5 153 OUT_1 -135 2 112 0 -163,-19,-163,-14 131 IN_B_2 -14 1 1 -163,-14,-136.5,-14 -163 0 -136.5 2 2 -136.5,-20.5,-136.5,-14 -20.5 3 -14 1 3 -138.5,-20.5,-136.5,-20.5 153 OUT_2 -136.5 2 116 0 -164,-19,-164,-14.5 131 IN_B_3 -14.5 1 1 -164,-14.5,-138.5,-14.5 -164 0 -138.5 2 2 -138.5,-18.5,-138.5,-14.5 153 OUT_3 -14.5 1 126 0 -168,-19,-168,-13 131 IN_0 -13 1 1 -174.5,-13,-168,-13 -174.5 2 -168 0 2 -174.5,-23.5,-174.5,-13 -23.5 3 -13 1 3 -177,-23.5,-174.5,-23.5 147 OUT_0 -174.5 2 127 0 -169,-19,-169,-13.5 131 IN_1 -13.5 1 1 -175.5,-13.5,-169,-13.5 -175.5 2 -169 0 2 -175.5,-21.5,-175.5,-13.5 -21.5 3 -13.5 1 3 -177,-21.5,-175.5,-21.5 147 OUT_1 -175.5 2 128 0 -170,-19,-170,-14 131 IN_2 -14 1 1 -176,-14,-170,-14 -176 2 -170 0 2 -176,-19.5,-176,-14 -19.5 3 -14 1 3 -177,-19.5,-176,-19.5 147 OUT_2 -176 2 129 0 -171,-19,-171,-17.5 131 IN_3 -17.5 1 1 -177,-17.5,-171,-17.5 147 OUT_3 -171 0 130 0 -164.5,-32.5,-164.5,-27 131 OUT_0 -32.5 1 1 -164.5,-32.5,-163,-32.5 184 IN_0 -164.5 0 131 0 -165.5,-31.5,-165.5,-27 131 OUT_1 -31.5 1 1 -165.5,-31.5,-163,-31.5 184 IN_1 -165.5 0 132 0 -166.5,-30.5,-166.5,-27 131 OUT_2 -30.5 1 1 -166.5,-30.5,-163,-30.5 184 IN_2 -166.5 0 133 0 -167.5,-29.5,-167.5,-27 131 OUT_3 -29.5 1 1 -167.5,-29.5,-163,-29.5 184 IN_3 -167.5 0 202.085,35.382,326.543,-61.146 338 AE_FULLADDER_4BIT 254,-9.5 IN_0205 IN_1203 IN_2201 IN_3199 IN_B_0185 IN_B_1186 IN_B_2187 IN_B_3188

OUT_0193

OUT_1194

OUT_2195

OUT_3196

carry_in197 angle 0.0 INPUT_BITS 4 341 DD_KEYPAD_HEX 225.5,-9

OUT_0204

OUT_1202

OUT_2200

OUT_3198

KEYPAD_BOX_0 -3.65,3.05,-2.05,5.65 KEYPAD_BOX_1 -1.76,3.05,-0.16,5.65 KEYPAD_BOX_2 0.15,3.05,1.75,5.65 KEYPAD_BOX_3 2.05,3.05,3.65,5.65 KEYPAD_BOX_4 -3.65,0.15,-2.05,2.75 KEYPAD_BOX_5 -1.76,0.15,-0.16,2.75 KEYPAD_BOX_6 0.15,0.15,1.75,2.75 KEYPAD_BOX_7 2.05,0.15,3.65,2.75 KEYPAD_BOX_8 -3.65,-2.75,-2.05,-0.15 KEYPAD_BOX_9 -1.76,-2.75,-0.16,-0.15 KEYPAD_BOX_A 0.15,-2.75,1.75,-0.15 KEYPAD_BOX_B 2.05,-2.75,3.65,-0.15 KEYPAD_BOX_C -3.65,-5.65,-2.05,-3.05 KEYPAD_BOX_D -1.76,-5.65,-0.16,-3.05 KEYPAD_BOX_E 0.15,-5.65,1.75,-3.05 KEYPAD_BOX_F 2.05,-5.65,3.65,-3.05 angle 0.0 OUTPUT_BITS 4 OUTPUT_NUM 3 342 DD_KEYPAD_HEX 276.5,-8

OUT_0185

OUT_1186

OUT_2187

OUT_3188

KEYPAD_BOX_0 -3.65,3.05,-2.05,5.65 KEYPAD_BOX_1 -1.76,3.05,-0.16,5.65 KEYPAD_BOX_2 0.15,3.05,1.75,5.65 KEYPAD_BOX_3 2.05,3.05,3.65,5.65 KEYPAD_BOX_4 -3.65,0.15,-2.05,2.75 KEYPAD_BOX_5 -1.76,0.15,-0.16,2.75 KEYPAD_BOX_6 0.15,0.15,1.75,2.75 KEYPAD_BOX_7 2.05,0.15,3.65,2.75 KEYPAD_BOX_8 -3.65,-2.75,-2.05,-0.15 KEYPAD_BOX_9 -1.76,-2.75,-0.16,-0.15 KEYPAD_BOX_A 0.15,-2.75,1.75,-0.15 KEYPAD_BOX_B 2.05,-2.75,3.65,-0.15 KEYPAD_BOX_C -3.65,-5.65,-2.05,-3.05 KEYPAD_BOX_D -1.76,-5.65,-0.16,-3.05 KEYPAD_BOX_E 0.15,-5.65,1.75,-3.05 KEYPAD_BOX_F 2.05,-5.65,3.65,-3.05 angle 0 OUTPUT_BITS 4 OUTPUT_NUM 2 343 GE_LED_DISPLAY_4BIT 260,-18 IN_0193 IN_1194 IN_2195 IN_3196 VALUE_BOX -1.9,-2.9,1.9,3.9 angle 0.0 CURRENT_VALUE 15 INPUT_BITS 4 NO_HOLD true SYNC_LOAD false UNKNOWN_OUTPUTS false 345 EE_VDD 264,-7.5

OUT_0197

angle 0.0 OUTPUT_BITS 1 OUTPUT_NUM 1 347 AA_LABEL 266,-9.5 LABEL_TEXT C_in = 1 TEXT_HEIGHT 1 angle 0.0 349 AE_SMALL_INVERTER 233.5,-5.5 IN_0198

OUT_0199

angle 0.0 DEFAULT_DELAY 1 INPUT_BITS 1 351 AE_SMALL_INVERTER 233.5,-8 IN_0200

OUT_0201

angle 0.0 DEFAULT_DELAY 1 INPUT_BITS 1 353 AE_SMALL_INVERTER 235,-10 IN_0202

OUT_0203

angle 0.0 DEFAULT_DELAY 1 INPUT_BITS 1 355 AE_SMALL_INVERTER 236.5,-12 IN_0204

OUT_0205

angle 0.0 DEFAULT_DELAY 1 INPUT_BITS 1 357 AA_LABEL 226,0.5 LABEL_TEXT Input X TEXT_HEIGHT 2 angle 0.0 359 AA_LABEL 279.5,3.5 LABEL_TEXT Input Y TEXT_HEIGHT 2 angle 0.0 361 AA_LABEL 263,-23 LABEL_TEXT Output Z = ? TEXT_HEIGHT 2 angle 0.0 363 AA_LABEL 258,12 LABEL_TEXT What is the function Z? TEXT_HEIGHT 2 angle 0.0 365 AA_LABEL 257.5,8 LABEL_TEXT Assume inputs X,Y are 4-bit 2's Complement Nos. TEXT_HEIGHT 1 angle 0.0 193 0 255.5,-19,255.5,-13.5 338 OUT_0 -19 1 1 255.5,-19,257,-19 343 IN_0 255.5 0 194 0 254.5,-18,254.5,-13.5 338 OUT_1 -18 1 1 254.5,-18,257,-18 343 IN_1 254.5 0 195 0 253.5,-17,253.5,-13.5 338 OUT_2 -17 1 1 253.5,-17,257,-17 343 IN_2 253.5 0 196 0 252.5,-16,252.5,-13.5 338 OUT_3 -16 1 1 252.5,-16,257,-16 343 IN_3 252.5 0 197 1 262,-8.5,264,-8.5 345 OUT_0 338 carry_in 198 1 230.5,-5.5,231.5,-5.5 349 IN_0 230.5 2 2 230.5,-6,230.5,-5.5 341 OUT_3 -5.5 1 199 1 235.5,-5.5,249,-5.5 338 IN_3 349 OUT_0 200 1 230.5,-8,231.5,-8 351 IN_0 341 OUT_2 201 0 250,-5.5,250,-2.5 338 IN_2 -2.5 1 1 236.5,-2.5,250,-2.5 236.5 2 250 0 2 236.5,-8,236.5,-2.5 -8 3 -2.5 1 3 235.5,-8,236.5,-8 351 OUT_0 236.5 2 202 1 230.5,-10,233,-10 353 IN_0 341 OUT_1 203 0 251,-5.5,251,-0.5 338 IN_1 -0.5 1 1 238,-0.5,251,-0.5 238 2 251 0 2 238,-10,238,-0.5 -10 3 -0.5 1 3 237,-10,238,-10 353 OUT_0 238 2 204 1 230.5,-12,234.5,-12 355 IN_0 341 OUT_0 205 0 252,-5.5,252,0.5 338 IN_0 0.5 1 1 239,0.5,252,0.5 239 2 252 0 2 239,-12,239,0.5 -12 3 0.5 1 3 238.5,-12,239,-12 355 OUT_0 239 2 185 0 259,-5.5,259,0.5 338 IN_B_0 0.5 1 1 259,0.5,286,0.5 259 0 286 2 2 286,-11,286,0.5 -11 3 0.5 1 3 281.5,-11,286,-11 342 OUT_0 286 2 186 0 258,-5.5,258,0 338 IN_B_1 0 1 1 258,0,285,0 258 0 285 2 2 285,-9,285,0 -9 3 0 1 3 281.5,-9,285,-9 342 OUT_1 285 2 187 0 257,-5.5,257,-0.5 338 IN_B_2 -0.5 1 1 257,-0.5,283.5,-0.5 257 0 283.5 2 2 283.5,-7,283.5,-0.5 -7 3 -0.5 1 3 281.5,-7,283.5,-7 342 OUT_2 283.5 2 188 0 256,-5.5,256,-1 338 IN_B_3 -1 1 1 256,-1,281.5,-1 256 0 281.5 2 2 281.5,-5,281.5,-1 342 OUT_3 -1 1 137.198,-77.9653,217.02,-139.874 293 GA_LED 188.5,-120 N_in0179 LED_BOX -0.76,-0.76,0.76,0.76 angle 0.0 294 GA_LED 188.5,-123.5 N_in0180 LED_BOX -0.76,-0.76,0.76,0.76 angle 0.0 295 AE_MUX_4x1 178,-103 IN_0161 IN_1162 IN_2163 IN_3174

OUT149

SEL_0154 SEL_1150 angle 0.0 INPUT_BITS 4 296 GA_LED 188,-103 N_in0149 LED_BOX -0.76,-0.76,0.76,0.76 angle 0.0 297 GA_LED 188.5,-126.5 N_in0181 LED_BOX -0.76,-0.76,0.76,0.76 angle 0.0 299 GA_LED 189,-129.5 N_in0182 LED_BOX -0.76,-0.76,0.76,0.76 angle 0.0 300 AA_TOGGLE 173,-92

OUT_0150

CLICK_BOX -0.76,-0.76,0.76,0.76 angle 0.0 OUTPUT_BITS 1 OUTPUT_NUM 0 301 EE_VDD 157,-121

OUT_0183

angle 0.0 OUTPUT_BITS 1 OUTPUT_NUM 1 302 AA_LABEL 172.5,-115 LABEL_TEXT Decoder Schematic TEXT_HEIGHT 2 angle 0.0 303 AA_LABEL 159,-119 LABEL_TEXT Voltage source TEXT_HEIGHT 1 angle 0.0 304 AA_LABEL 162,-123.5 LABEL_TEXT A TEXT_HEIGHT 1 angle 0.0 305 AA_LABEL 162,-126.5 LABEL_TEXT B TEXT_HEIGHT 1 angle 0.0 306 AA_LABEL 168,-129 LABEL_TEXT Output selected depends on value of AB TEXT_HEIGHT 1 angle 0.0 307 AA_LABEL 192.5,-120 LABEL_TEXT Henry TEXT_HEIGHT 1 angle 0.0 308 AA_LABEL 192,-123 LABEL_TEXT Sarah TEXT_HEIGHT 1 angle 0.0 309 AA_LABEL 193.5,-126 LABEL_TEXT Antonio TEXT_HEIGHT 1 angle 0.0 310 AA_LABEL 168,-132 LABEL_TEXT Output codes go from 0 (00) to 3 (11) TEXT_HEIGHT 1 angle 0.0 311 AA_LABEL 192.5,-129 LABEL_TEXT Kevin TEXT_HEIGHT 1 angle 0.0 312 AA_LABEL 167,-130.5 LABEL_TEXT E is enable signal - enables decoder TEXT_HEIGHT 1 angle 0.0 313 AA_LABEL 170,-133.5 LABEL_TEXT Kevin has code 0 (00), Sarah has code 2 (10) TEXT_HEIGHT 1 angle 0.0 314 AA_TOGGLE 173,-89

OUT_0154

CLICK_BOX -0.76,-0.76,0.76,0.76 angle 0.0 OUTPUT_BITS 1 OUTPUT_NUM 1 315 AA_TOGGLE 164,-99.5

OUT_0174

CLICK_BOX -0.76,-0.76,0.76,0.76 angle 0.0 OUTPUT_BITS 1 OUTPUT_NUM 0 316 AA_TOGGLE 164,-102

OUT_0163

CLICK_BOX -0.76,-0.76,0.76,0.76 angle 0.0 OUTPUT_BITS 1 OUTPUT_NUM 1 317 AA_TOGGLE 164,-104

OUT_0162

CLICK_BOX -0.76,-0.76,0.76,0.76 angle 0.0 OUTPUT_BITS 1 OUTPUT_NUM 0 318 AA_TOGGLE 164,-106

OUT_0161

CLICK_BOX -0.76,-0.76,0.76,0.76 angle 0.0 OUTPUT_BITS 1 OUTPUT_NUM 0 319 AA_LABEL 160,-106 LABEL_TEXT Kevin TEXT_HEIGHT 1 angle 0.0 320 AA_LABEL 159.5,-104 LABEL_TEXT Antonio TEXT_HEIGHT 1 angle 0.0 321 AA_LABEL 160,-102 LABEL_TEXT Sarah TEXT_HEIGHT 1 angle 0.0 322 AA_LABEL 160,-99.5 LABEL_TEXT Henry TEXT_HEIGHT 1 angle 0.0 323 AA_LABEL 171.5,-85 LABEL_TEXT Control Signals TEXT_HEIGHT 1 angle 0.0 324 AA_LABEL 172.5,-82 LABEL_TEXT Multiplexer Schematic TEXT_HEIGHT 2 angle 0.0 325 AA_LABEL 191,-105.5 LABEL_TEXT Output TEXT_HEIGHT 1 angle 0.0 326 AA_LABEL 172.5,-87 LABEL_TEXT Determines which input to send to output TEXT_HEIGHT 1 angle 0.0 327 AA_LABEL 174.5,-109 LABEL_TEXT 0 on MUX input lines indicates this input is select when control signal=0 TEXT_HEIGHT 1 angle 0.0 328 AA_LABEL 168.5,-111 LABEL_TEXT So control lines (select lines)=00 then Kevin is selected TEXT_HEIGHT 1 angle 0.0 329 BA_DECODER_2x4 176.5,-123.5 ENABLE183 IN_0175 IN_1178

OUT_0182

OUT_1181

OUT_2180

OUT_3179

angle 0.0 INPUT_BITS 2 330 AA_TOGGLE 164,-123.5

OUT_0178

CLICK_BOX -0.76,-0.76,0.76,0.76 angle 0.0 OUTPUT_BITS 1 OUTPUT_NUM 1 331 AA_TOGGLE 164,-126.5

OUT_0175

CLICK_BOX -0.76,-0.76,0.76,0.76 angle 0.0 OUTPUT_BITS 1 OUTPUT_NUM 0 149 1 181,-103,187,-103 295 OUT 296 N_in0 150 0 178,-98,178,-92 295 SEL_1 -92 1 1 175,-92,178,-92 300 OUT_0 178 0 154 0 179,-98,179,-89 295 SEL_0 -89 1 1 175,-89,179,-89 314 OUT_0 179 0 161 1 166,-106,175,-106 318 OUT_0 295 IN_0 162 1 166,-104,175,-104 317 OUT_0 295 IN_1 163 1 166,-102,175,-102 316 OUT_0 295 IN_2 174 0 170.5,-100,170.5,-99.5 -100 2 -99.5 1 1 166,-99.5,170.5,-99.5 315 OUT_0 170.5 0 2 170.5,-100,175,-100 295 IN_3 170.5 0 175 0 169.5,-126.5,169.5,-125 -126.5 2 -125 1 1 169.5,-125,173.5,-125 329 IN_0 169.5 0 2 166,-126.5,169.5,-126.5 331 OUT_0 169.5 0 178 0 169.5,-124,169.5,-123.5 -124 2 -123.5 1 1 166,-123.5,169.5,-123.5 330 OUT_0 169.5 0 2 169.5,-124,173.5,-124 329 IN_1 169.5 0 179 0 183.5,-122,183.5,-120 -122 2 -120 1 1 183.5,-120,187.5,-120 293 N_in0 183.5 0 2 179.5,-122,183.5,-122 329 OUT_3 183.5 0 180 0 183.5,-123.5,183.5,-123 -123.5 1 -123 2 1 183.5,-123.5,187.5,-123.5 294 N_in0 183.5 0 2 179.5,-123,183.5,-123 329 OUT_2 183.5 0 181 0 183.5,-126.5,183.5,-124 -126.5 1 -124 2 1 183.5,-126.5,187.5,-126.5 297 N_in0 183.5 0 2 179.5,-124,183.5,-124 329 OUT_1 183.5 0 182 0 183.5,-129.5,183.5,-125 -129.5 1 -125 2 1 183.5,-129.5,188,-129.5 299 N_in0 183.5 0 2 179.5,-125,183.5,-125 329 OUT_0 183.5 0 183 1 157,-122,173.5,-122 301 OUT_0 329 ENABLE -264.122,224.246,-185.846,163.536 275 AA_LABEL -245,203.5 LABEL_TEXT set A=1,B=0,C=1,D=0 TEXT_HEIGHT 1 angle 0.0 276 AA_MUX_2x1 -233.5,199 IN_0144 IN_1143

OUT141

SEL_0147 angle 0.0 INPUT_BITS 2 277 AA_MUX_2x1 -233.5,192.5 IN_0146 IN_1145

OUT142

SEL_0147 angle 0.0 INPUT_BITS 2 278 AA_AND2 -225.5,196.5 IN_0141 IN_1142

OUT148

angle 0.0 INPUT_BITS 2 279 AA_TOGGLE -240.5,200

OUT_0143

CLICK_BOX -0.76,-0.76,0.76,0.76 angle 0.0 OUTPUT_BITS 1 OUTPUT_NUM 1 280 AA_TOGGLE -240.5,197.5

OUT_0144

CLICK_BOX -0.76,-0.76,0.76,0.76 angle 0.0 OUTPUT_BITS 1 OUTPUT_NUM 0 281 AA_TOGGLE -240.5,194

OUT_0145

CLICK_BOX -0.76,-0.76,0.76,0.76 angle 0.0 OUTPUT_BITS 1 OUTPUT_NUM 1 282 AA_TOGGLE -240.5,190.5

OUT_0146

CLICK_BOX -0.76,-0.76,0.76,0.76 angle 0.0 OUTPUT_BITS 1 OUTPUT_NUM 0 283 AA_TOGGLE -238.5,208

OUT_0147

CLICK_BOX -0.76,-0.76,0.76,0.76 angle 0.0 OUTPUT_BITS 1 OUTPUT_NUM 0 284 AA_LABEL -241,208.5 LABEL_TEXT X TEXT_HEIGHT 1 angle 0.0 285 AA_LABEL -243,200.5 LABEL_TEXT A TEXT_HEIGHT 1 angle 0.0 286 AA_LABEL -243,198 LABEL_TEXT B TEXT_HEIGHT 1 angle 0.0 287 AA_LABEL -243,194.5 LABEL_TEXT C TEXT_HEIGHT 1 angle 0.0 288 AA_LABEL -243,191 LABEL_TEXT D TEXT_HEIGHT 1 angle 0.0 289 AA_LABEL -219,199 LABEL_TEXT F TEXT_HEIGHT 1 angle 0.0 290 GA_LED -218,196.5 N_in0148 LED_BOX -0.76,-0.76,0.76,0.76 angle 0.0 291 AA_LABEL -233.5,213 LABEL_TEXT What is the function F ? TEXT_HEIGHT 2 angle 0.0 292 AA_LABEL -230.5,210.5 LABEL_TEXT (for x=0? for x=1?) TEXT_HEIGHT 1 angle 0.0 141 0 -230,197.5,-230,199 197.5 1 199 2 1 -230,197.5,-228.5,197.5 278 IN_0 -230 0 2 -231.5,199,-230,199 276 OUT -230 0 142 0 -230,192.5,-230,195.5 192.5 2 195.5 1 1 -230,195.5,-228.5,195.5 278 IN_1 -230 0 2 -231.5,192.5,-230,192.5 277 OUT -230 0 143 1 -238.5,200,-235.5,200 279 OUT_0 276 IN_1 144 0 -237,197.5,-237,198 197.5 2 198 1 1 -237,198,-235.5,198 276 IN_0 -237 0 2 -238.5,197.5,-237,197.5 280 OUT_0 -237 0 145 0 -237,193.5,-237,194 193.5 1 194 2 1 -237,193.5,-235.5,193.5 277 IN_1 -237 0 2 -238.5,194,-237,194 281 OUT_0 -237 0 146 0 -237,190.5,-237,191.5 190.5 2 191.5 1 1 -237,191.5,-235.5,191.5 277 IN_0 -237 0 2 -238.5,190.5,-237,190.5 282 OUT_0 -237 0 147 0 -231,195,-231,208 195 2 201.5 3 208 1 1 -236.5,208,-231,208 283 OUT_0 -231 0 2 -233.5,195,-231,195 277 SEL_0 -231 0 3 -233.5,201.5,-231,201.5 276 SEL_0 -231 0 148 1 -222.5,196.5,-219,196.5 278 OUT 290 N_in0 107.672,-63.2128,237.806,-164.143 208 AA_MUX_2x1 141.5,-100 IN_0168 IN_1173

OUT156

SEL_0164 angle 0.0 INPUT_BITS 2 209 AA_MUX_2x1 145,-107 IN_0169 IN_168

OUT157

SEL_0165 angle 0.0 INPUT_BITS 2 210 AA_MUX_2x1 149.5,-114.5 IN_0170 IN_171

OUT158

SEL_0166 angle 0.0 INPUT_BITS 2 211 AA_MUX_2x1 153.5,-122 IN_0171 IN_1151

OUT159

SEL_0167 angle 0.0 INPUT_BITS 2 212 BA_DECODER_2x4 132.5,-81.5 ENABLE64 IN_0176 IN_1177

OUT_0164

OUT_1165

OUT_2166

OUT_3167

angle 0.0 INPUT_BITS 2 213 AA_TOGGLE 137.5,-101

OUT_0168

CLICK_BOX -0.76,-0.76,0.76,0.76 angle 0.0 OUTPUT_BITS 1 OUTPUT_NUM 0 214 AA_TOGGLE 140.5,-108

OUT_0169

CLICK_BOX -0.76,-0.76,0.76,0.76 angle 0.0 OUTPUT_BITS 1 OUTPUT_NUM 0 215 AA_TOGGLE 145,-117

OUT_0170

CLICK_BOX -0.76,-0.76,0.76,0.76 angle 0.0 OUTPUT_BITS 1 OUTPUT_NUM 0 216 AA_TOGGLE 148,-123

OUT_0171

CLICK_BOX -0.76,-0.76,0.76,0.76 angle 0.0 OUTPUT_BITS 1 OUTPUT_NUM 0 217 AA_LABEL 136,-101 LABEL_TEXT 0 TEXT_HEIGHT 2 angle 0.0 218 AA_LABEL 138.5,-108 LABEL_TEXT 0 TEXT_HEIGHT 2 angle 0.0 219 AA_LABEL 143,-116 LABEL_TEXT 0 TEXT_HEIGHT 2 angle 0.0 220 AA_LABEL 146.5,-123.5 LABEL_TEXT 0 TEXT_HEIGHT 2 angle 0.0 221 AA_TOGGLE 127.5,-92

OUT_0172

CLICK_BOX -0.76,-0.76,0.76,0.76 angle 0.0 OUTPUT_BITS 1 OUTPUT_NUM 1 222 AA_TOGGLE 127.5,-95.5

OUT_0160

CLICK_BOX -0.76,-0.76,0.76,0.76 angle 0.0 OUTPUT_BITS 1 OUTPUT_NUM 1 223 AA_AND2 134,-94 IN_0172 IN_1160

OUT173

angle 0.0 INPUT_BITS 2 224 AA_TOGGLE 127.5,-106

OUT_070

CLICK_BOX -0.76,-0.76,0.76,0.76 angle 0.0 OUTPUT_BITS 1 OUTPUT_NUM 0 226 AA_TOGGLE 127.5,-116

OUT_073

CLICK_BOX -0.76,-0.76,0.76,0.76 angle 0.0 OUTPUT_BITS 1 OUTPUT_NUM 1 227 AA_TOGGLE 128,-121

OUT_0152

CLICK_BOX -0.76,-0.76,0.76,0.76 angle 0.0 OUTPUT_BITS 1 OUTPUT_NUM 1 228 AA_TOGGLE 128,-126

OUT_0153

CLICK_BOX -0.76,-0.76,0.76,0.76 angle 0.0 OUTPUT_BITS 1 OUTPUT_NUM 0 229 AA_TOGGLE 122.5,-82.5

OUT_0177

CLICK_BOX -0.76,-0.76,0.76,0.76 angle 0.0 OUTPUT_BITS 1 OUTPUT_NUM 0 230 AA_TOGGLE 122.5,-85.5

OUT_0176

CLICK_BOX -0.76,-0.76,0.76,0.76 angle 0.0 OUTPUT_BITS 1 OUTPUT_NUM 0 233 AA_LABEL 120.5,-82.5 LABEL_TEXT A TEXT_HEIGHT 2 angle 0.0 234 AA_LABEL 120.5,-85.5 LABEL_TEXT B TEXT_HEIGHT 2 angle 0.0 235 AA_LABEL 124.5,-92 LABEL_TEXT x0 TEXT_HEIGHT 2 angle 0.0 236 AA_LABEL 124.5,-95.5 LABEL_TEXT y0 TEXT_HEIGHT 2 angle 0.0 237 AA_LABEL 123,-102.5 LABEL_TEXT x1 TEXT_HEIGHT 2 angle 0 238 AA_LABEL 123.5,-115 LABEL_TEXT y2 TEXT_HEIGHT 2 angle 0.0 239 AA_LABEL 124.5,-121 LABEL_TEXT x3 TEXT_HEIGHT 2 angle 0.0 240 AA_LABEL 124.5,-126 LABEL_TEXT y3 TEXT_HEIGHT 2 angle 0.0 241 GA_LED 175.5,-103.5 N_in0155 LED_BOX -0.76,-0.76,0.76,0.76 angle 0.0 242 AA_AND2 137,-122 IN_0152 IN_1153

OUT151

angle 0.0 INPUT_BITS 2 244 AA_TOGGLE 127,-103

OUT_069

CLICK_BOX -0.76,-0.76,0.76,0.76 angle 0.0 OUTPUT_BITS 1 OUTPUT_NUM 0 245 AA_TOGGLE 127.5,-112.5

OUT_072

CLICK_BOX -0.76,-0.76,0.76,0.76 angle 0.0 OUTPUT_BITS 1 OUTPUT_NUM 0 246 AA_LABEL 123.5,-106 LABEL_TEXT y1 TEXT_HEIGHT 2 angle 0 247 AA_LABEL 124,-112 LABEL_TEXT x2 TEXT_HEIGHT 2 angle 0 248 AE_OR4 166.5,-103 IN_0156 IN_1157 IN_2158 IN_3159

OUT155

angle 0.0 INPUT_BITS 4 249 AA_LABEL 133,-85 LABEL_TEXT 4-1 decoder TEXT_HEIGHT 1 angle 0.0 250 AA_LABEL 154.5,-127.5 LABEL_TEXT 2-1 MUX TEXT_HEIGHT 1 angle 0.0 252 AA_LABEL 159.5,-74.5 LABEL_TEXT What is the function F computed by circuit? TEXT_HEIGHT 2 angle 0.0 298 AA_LABEL 175.5,-99.5 LABEL_TEXT F TEXT_HEIGHT 2 angle 0.0 121 AA_LABEL 175,-90 LABEL_TEXT which output from decoder is enabled? TEXT_HEIGHT 1 angle 0.0 129 AA_LABEL 175.5,-92 LABEL_TEXT which multiplexer will have select line=1 TEXT_HEIGHT 1 angle 0.0 144 AA_AND2 135,-105 IN_069 IN_170

OUT68

angle 0.0 INPUT_BITS 2 146 AA_AND2 139,-113.5 IN_072 IN_173

OUT71

angle 0.0 INPUT_BITS 2 148 AA_LABEL 167.5,-81 LABEL_TEXT Input to decoder: A,B TEXT_HEIGHT 1 angle 0.0 149 EE_VDD 126,-79

OUT_064

angle 0.0 OUTPUT_BITS 1 OUTPUT_NUM 1 150 AA_LABEL 170.5,-83.5 LABEL_TEXT Other inputs: x0,..,x3,y0..,y3 TEXT_HEIGHT 1 angle 0.0 152 AA_LABEL 163,-85.5 LABEL_TEXT Output= F TEXT_HEIGHT 1 angle 0.0 154 AA_LABEL 172,-88 LABEL_TEXT Hint: If A=0,B=0 what is output function F TEXT_HEIGHT 1 angle 0.0 64 1 126,-80,129.5,-80 149 OUT_0 212 ENABLE 68 0 140.5,-106,140.5,-105 -106 1 -105 2 1 140.5,-106,143,-106 209 IN_1 140.5 0 2 138,-105,140.5,-105 144 OUT 140.5 0 69 0 130.5,-104,130.5,-103 -104 1 -103 2 1 130.5,-104,132,-104 144 IN_0 130.5 0 2 129,-103,130.5,-103 244 OUT_0 130.5 0 70 1 129.5,-106,132,-106 144 IN_1 224 OUT_0 71 1 142,-113.5,147.5,-113.5 210 IN_1 146 OUT 72 1 129.5,-112.5,136,-112.5 146 IN_0 245 OUT_0 73 0 132.5,-116,132.5,-114.5 -116 2 -114.5 1 1 132.5,-114.5,136,-114.5 146 IN_1 132.5 0 2 129.5,-116,132.5,-116 226 OUT_0 132.5 0 151 0 145.5,-122,145.5,-121 -122 2 -121 1 1 145.5,-121,151.5,-121 211 IN_1 145.5 0 2 140,-122,145.5,-122 242 OUT 145.5 0 152 1 130,-121,134,-121 227 OUT_0 242 IN_0 153 0 132,-126,132,-123 -126 2 -123 1 1 132,-123,134,-123 242 IN_1 132 0 2 130,-126,132,-126 228 OUT_0 132 0 155 1 170.5,-103,174.5,-103 248 OUT 174.5 2 2 174.5,-103.5,174.5,-103 241 N_in0 -103 1 156 1 143.5,-100,163.5,-100 208 OUT 248 IN_0 157 0 155,-107,155,-102 -107 2 -102 1 1 155,-102,163.5,-102 248 IN_1 155 0 2 147,-107,155,-107 209 OUT 155 0 158 0 157.5,-114.5,157.5,-104 -114.5 1 -104 2 1 151.5,-114.5,157.5,-114.5 210 OUT 157.5 0 2 157.5,-104,163.5,-104 248 IN_2 157.5 0 159 0 159.5,-122,159.5,-106 -122 1 -106 2 1 155.5,-122,159.5,-122 211 OUT 159.5 0 2 159.5,-106,163.5,-106 248 IN_3 159.5 0 160 0 130,-95.5,130,-95 -95.5 1 -95 2 1 129.5,-95.5,130,-95.5 222 OUT_0 130 0 2 130,-95,131,-95 223 IN_1 130 0 164 0 141.5,-97.5,141.5,-83 208 SEL_0 -83 1 1 135.5,-83,141.5,-83 212 OUT_0 141.5 0 165 0 145,-104.5,145,-82 209 SEL_0 -82 1 1 135.5,-82,145,-82 212 OUT_1 145 0 166 0 149.5,-112,149.5,-81 210 SEL_0 -81 1 1 135.5,-81,149.5,-81 212 OUT_2 149.5 0 167 0 153.5,-119.5,153.5,-80 211 SEL_0 -80 1 1 135.5,-80,153.5,-80 212 OUT_3 153.5 0 168 0 139.5,-101,139.5,-101 208 IN_0 213 OUT_0 169 1 142.5,-108,143,-108 214 OUT_0 209 IN_0 170 2 147.5,-117,147.5,-115.5 210 IN_0 -117 3 3 147,-117,147.5,-117 215 OUT_0 147.5 2 171 1 150,-123,151.5,-123 216 OUT_0 211 IN_0 172 0 130,-93,130,-92 -93 1 -92 2 1 130,-93,131,-93 223 IN_0 130 0 2 129.5,-92,130,-92 221 OUT_0 130 0 173 0 138,-99,138,-94 -99 1 -94 2 1 138,-99,139.5,-99 208 IN_1 138 0 2 137,-94,138,-94 223 OUT 138 0 176 0 127,-85.5,127,-83 -85.5 2 -83 1 1 127,-83,129.5,-83 212 IN_0 127 0 2 124.5,-85.5,127,-85.5 230 OUT_0 127 0 177 0 127,-82.5,127,-82 -82.5 2 -82 1 1 127,-82,129.5,-82 212 IN_1 127 0 2 124.5,-82.5,127,-82.5 229 OUT_0 127 0 20.5,19.873,102.025,-43.3565 194 AE_SMALL_INVERTER 48,-25 IN_054

OUT_0225

angle 0.0 DEFAULT_DELAY 1 INPUT_BITS 1 196 AE_SMALL_INVERTER 46,-19 IN_056

OUT_0226

angle 0.0 DEFAULT_DELAY 1 INPUT_BITS 1 198 AA_LABEL 61,16 LABEL_TEXT Describe what this circuit/device does? TEXT_HEIGHT 2 angle 0.0 200 AA_LABEL 56,13 LABEL_TEXT Inputs: X,Y,C and Output: F TEXT_HEIGHT 2 angle 0.0 8 DD_KEYPAD_HEX 31,-3.5

OUT_0215

OUT_1216

OUT_2217

OUT_3218

KEYPAD_BOX_0 -3.65,3.05,-2.05,5.65 KEYPAD_BOX_1 -1.76,3.05,-0.16,5.65 KEYPAD_BOX_2 0.15,3.05,1.75,5.65 KEYPAD_BOX_3 2.05,3.05,3.65,5.65 KEYPAD_BOX_4 -3.65,0.15,-2.05,2.75 KEYPAD_BOX_5 -1.76,0.15,-0.16,2.75 KEYPAD_BOX_6 0.15,0.15,1.75,2.75 KEYPAD_BOX_7 2.05,0.15,3.65,2.75 KEYPAD_BOX_8 -3.65,-2.75,-2.05,-0.15 KEYPAD_BOX_9 -1.76,-2.75,-0.16,-0.15 KEYPAD_BOX_A 0.15,-2.75,1.75,-0.15 KEYPAD_BOX_B 2.05,-2.75,3.65,-0.15 KEYPAD_BOX_C -3.65,-5.65,-2.05,-3.05 KEYPAD_BOX_D -1.76,-5.65,-0.16,-3.05 KEYPAD_BOX_E 0.15,-5.65,1.75,-3.05 KEYPAD_BOX_F 2.05,-5.65,3.65,-3.05 angle 0.0 OUTPUT_BITS 4 OUTPUT_NUM 7 202 AA_LABEL 96.5,-35.5 LABEL_TEXT 4-bit output F TEXT_HEIGHT 1 angle 0.0 204 AA_LABEL 76.5,10 LABEL_TEXT X,Y are 4-bit 2s complement numbers TEXT_HEIGHT 1 angle 0.0 21 DD_KEYPAD_HEX 31.5,-34

OUT_049

OUT_151

OUT_254

OUT_356

KEYPAD_BOX_0 -3.65,3.05,-2.05,5.65 KEYPAD_BOX_1 -1.76,3.05,-0.16,5.65 KEYPAD_BOX_2 0.15,3.05,1.75,5.65 KEYPAD_BOX_3 2.05,3.05,3.65,5.65 KEYPAD_BOX_4 -3.65,0.15,-2.05,2.75 KEYPAD_BOX_5 -1.76,0.15,-0.16,2.75 KEYPAD_BOX_6 0.15,0.15,1.75,2.75 KEYPAD_BOX_7 2.05,0.15,3.65,2.75 KEYPAD_BOX_8 -3.65,-2.75,-2.05,-0.15 KEYPAD_BOX_9 -1.76,-2.75,-0.16,-0.15 KEYPAD_BOX_A 0.15,-2.75,1.75,-0.15 KEYPAD_BOX_B 2.05,-2.75,3.65,-0.15 KEYPAD_BOX_C -3.65,-5.65,-2.05,-3.05 KEYPAD_BOX_D -1.76,-5.65,-0.16,-3.05 KEYPAD_BOX_E 0.15,-5.65,1.75,-3.05 KEYPAD_BOX_F 2.05,-5.65,3.65,-3.05 angle 0.0 OUTPUT_BITS 4 OUTPUT_NUM 6 84 AA_LABEL 24,-9.5 LABEL_TEXT Input Y TEXT_HEIGHT 1 angle 0.0 88 AA_LABEL 23.5,-32.5 LABEL_TEXT Input X TEXT_HEIGHT 1 angle 0.0 92 AA_MUX_2x1 56,-32 IN_051 IN_1224

OUT220

SEL_0115 angle 0.0 INPUT_BITS 2 94 AA_MUX_2x1 53,-26 IN_054 IN_1225

OUT221

SEL_0115 angle 0.0 INPUT_BITS 2 96 AA_MUX_2x1 50.5,-20 IN_056 IN_1226

OUT222

SEL_0115 angle 0.0 INPUT_BITS 2 106 AA_MUX_2x1 60.5,-38 IN_049 IN_1223

OUT219

SEL_0115 angle 0.0 INPUT_BITS 2 110 AA_LABEL 97.5,-19.5 LABEL_TEXT 4-bit Adder TEXT_HEIGHT 1 angle 0.0 112 AA_TOGGLE 50.5,6

OUT_0115

CLICK_BOX -0.76,-0.76,0.76,0.76 angle 0.0 OUTPUT_BITS 1 OUTPUT_NUM 0 117 AA_LABEL 51.5,9 LABEL_TEXT Input C TEXT_HEIGHT 1 angle 0.0 128 GE_LED_DISPLAY_4BIT 98.5,-30.5 IN_0211 IN_1212 IN_2213 IN_3214 VALUE_BOX -1.9,-2.9,1.9,3.9 angle 0.0 CURRENT_VALUE 13 INPUT_BITS 4 NO_HOLD true SYNC_LOAD false UNKNOWN_OUTPUTS false 186 AE_FULLADDER_4BIT 85,-19 IN_0219 IN_1220 IN_2221 IN_3222 IN_B_0215 IN_B_1216 IN_B_2217 IN_B_3218

OUT_0211

OUT_1212

OUT_2213

OUT_3214

carry_in115 angle 0.0 INPUT_BITS 4 188 AE_SMALL_INVERTER 55.5,-37 IN_049

OUT_0223

angle 0.0 DEFAULT_DELAY 1 INPUT_BITS 1 190 AE_SMALL_INVERTER 51,-31 IN_051

OUT_0224

angle 0.0 DEFAULT_DELAY 1 INPUT_BITS 1 211 0 86.5,-31.5,86.5,-23 186 OUT_0 -31.5 1 1 86.5,-31.5,95.5,-31.5 128 IN_0 86.5 0 212 0 85.5,-30.5,85.5,-23 186 OUT_1 -30.5 1 1 85.5,-30.5,95.5,-30.5 128 IN_1 85.5 0 213 0 84.5,-29.5,84.5,-23 186 OUT_2 -29.5 1 1 84.5,-29.5,95.5,-29.5 128 IN_2 84.5 0 214 0 83.5,-28.5,83.5,-23 186 OUT_3 -28.5 1 1 83.5,-28.5,95.5,-28.5 128 IN_3 83.5 0 215 0 90,-15,90,-6.5 186 IN_B_0 -6.5 1 1 36,-6.5,90,-6.5 8 OUT_0 90 0 216 0 89,-15,89,-4.5 186 IN_B_1 -4.5 1 1 36,-4.5,89,-4.5 8 OUT_1 89 0 217 0 88,-15,88,-2.5 186 IN_B_2 -2.5 1 1 36,-2.5,88,-2.5 8 OUT_2 88 0 218 0 87,-15,87,-0.5 186 IN_B_3 -0.5 1 1 36,-0.5,87,-0.5 8 OUT_3 87 0 219 0 71.5,-38,71.5,-10.5 -38 1 -10.5 2 1 62.5,-38,71.5,-38 106 OUT 71.5 0 2 71.5,-10.5,83,-10.5 71.5 0 83 3 3 83,-15,83,-10.5 186 IN_0 -10.5 2 220 0 82,-15,82,-11.5 186 IN_1 -11.5 1 1 58,-11.5,82,-11.5 58 2 82 0 2 58,-32,58,-11.5 92 OUT -11.5 1 221 0 81,-15,81,-12.5 186 IN_2 -12.5 1 1 55,-12.5,81,-12.5 55 2 81 0 2 55,-26,55,-12.5 94 OUT -12.5 1 222 0 80,-15,80,-13.5 186 IN_3 -13.5 1 1 52.5,-13.5,80,-13.5 52.5 2 80 0 2 52.5,-20,52.5,-13.5 96 OUT -13.5 1 223 1 57.5,-37,58.5,-37 106 IN_1 188 OUT_0 224 1 53,-31,54,-31 92 IN_1 190 OUT_0 225 1 50,-25,51,-25 94 IN_1 194 OUT_0 226 1 48,-19,48.5,-19 196 OUT_0 96 IN_1 49 1 36.5,-37,53.5,-37 188 IN_0 21 OUT_0 52.5 15 15 52.5,-39,52.5,-37 -39 16 -37 1 16 52.5,-39,58.5,-39 106 IN_0 52.5 15 51 0 45.5,-35,45.5,-33 -35 2 -33 1 1 45.5,-33,54,-33 92 IN_0 45.5 0 49 4 2 36.5,-35,45.5,-35 21 OUT_1 45.5 0 4 49,-33,49,-31 190 IN_0 -33 1 54 0 43.5,-33,43.5,-27 -33 2 -27 1 1 43.5,-27,51,-27 94 IN_0 43.5 0 46 4 2 36.5,-33,43.5,-33 21 OUT_2 43.5 0 4 46,-27,46,-25 194 IN_0 -27 1 56 0 42.5,-31,42.5,-21 -31 2 -21 1 1 42.5,-21,48.5,-21 96 IN_0 42.5 0 44 4 2 36.5,-31,42.5,-31 21 OUT_3 42.5 0 4 44,-21,44,-19 196 IN_0 -21 1 115 1 52.5,6,93,6 112 OUT_0 60.5 2 93 10 2 60.5,-35.5,60.5,6 106 SEL_0 -27.5 5 -23.5 6 -17.5 4 6 1 4 50.5,-17.5,60.5,-17.5 96 SEL_0 60.5 2 5 56,-27.5,60.5,-27.5 56 8 60.5 2 6 53,-23.5,60.5,-23.5 94 SEL_0 60.5 2 8 56,-29.5,56,-27.5 92 SEL_0 -27.5 5 10 93,-18,93,6 186 carry_in 6 1 329.8,15.0909,468.35,-92.3662 266 FF_GND 429,-30.5

OUT_0125

angle 0.0 OUTPUT_BITS 1 OUTPUT_NUM 0 268 AA_LABEL 447.5,-16.5 LABEL_TEXT Input C TEXT_HEIGHT 2 angle 0.0 270 AA_LABEL 456.5,-20 LABEL_TEXT (control signal) TEXT_HEIGHT 2 angle 0.0 155 AA_LABEL 391.5,-75.5 LABEL_TEXT Comparator: one of three outputs is a 1 TEXT_HEIGHT 2 angle 0.0 156 AA_LABEL 391.5,-84 LABEL_TEXT (output=1 if X>Y, 2 if X=Y, 4 if XY ) TEXT_HEIGHT 2 angle 0.0 157 AE_FULLADDER_4BIT 414.5,-23 IN_089 IN_188 IN_287 IN_386 IN_B_085 IN_B_184 IN_B_282 IN_B_381

OUT_0105

OUT_1106

OUT_2107

OUT_3108

angle 90 INPUT_BITS 4 158 BE_COMPARATOR_4BIT 416,-60

A_equal_B103

A_greater_B102

A_less_B104

IN_094 IN_195 IN_296 IN_397 IN_B_093 IN_B_192 IN_B_291 IN_B_390 angle 90 INPUT_BITS 4 159 AA_LABEL 337.5,-2.5 LABEL_TEXT Number Y TEXT_HEIGHT 2 angle 0.0 160 AA_LABEL 339,-74.5 LABEL_TEXT Number X TEXT_HEIGHT 2 angle 0.0 161 AA_LABEL 412.5,-12 LABEL_TEXT Adder TEXT_HEIGHT 2 angle 0.0 162 AA_MUX_2x1 433,-26.5 IN_0125 IN_1108

OUT101

SEL_0109 angle 0.0 INPUT_BITS 2 163 AA_MUX_2x1 433,-35.5 IN_0104 IN_1107

OUT100

SEL_0109 angle 0.0 INPUT_BITS 2 164 AA_MUX_2x1 433,-44.5 IN_0103 IN_1106

OUT99

SEL_0109 angle 0.0 INPUT_BITS 2 165 AA_MUX_2x1 433,-54 IN_0102 IN_1105

OUT98

SEL_0109 angle 0.0 INPUT_BITS 2 166 GE_LED_DISPLAY_4BIT 455.5,-41 IN_098 IN_199 IN_2100 IN_3101 VALUE_BOX -1.9,-2.9,1.9,3.9 angle 0.0 CURRENT_VALUE 4 INPUT_BITS 4 NO_HOLD true SYNC_LOAD false UNKNOWN_OUTPUTS false 167 AA_TOGGLE 442,-20.5

OUT_0109

CLICK_BOX -0.76,-0.76,0.76,0.76 angle 180 OUTPUT_BITS 1 OUTPUT_NUM 0 168 AA_LABEL 373.5,7.5 LABEL_TEXT What does this circuit do.. TEXT_HEIGHT 3 angle 0.0 169 HE_JUNC_4 373.5,-9 N_in074 N_in181 N_in290 LED_BOX -0.25,-0.25,0.25,0.25 angle 0.0 170 HE_JUNC_4 375,-11 N_in075 N_in182 N_in291 LED_BOX -0.25,-0.25,0.25,0.25 angle 0.0 171 HE_JUNC_4 378,-15 N_in076 N_in185 N_in293 LED_BOX -0.25,-0.25,0.25,0.25 angle 0.0 172 HE_JUNC_4 359,-56 N_in077 N_in297 N_in386 LED_BOX -0.25,-0.25,0.25,0.25 angle 0.0 173 HE_JUNC_4 361.5,-58 N_in078 N_in296 N_in387 LED_BOX -0.25,-0.25,0.25,0.25 angle 0.0 174 HE_JUNC_4 365,-60 N_in079 N_in295 N_in388 LED_BOX -0.25,-0.25,0.25,0.25 angle 0.0 175 HE_JUNC_4 368,-62 N_in080 N_in194 N_in389 LED_BOX -0.25,-0.25,0.25,0.25 angle 0.0 176 DD_KEYPAD_HEX 350,-59

OUT_080

OUT_179

OUT_278

OUT_377

KEYPAD_BOX_0 -3.65,3.05,-2.05,5.65 KEYPAD_BOX_1 -1.76,3.05,-0.16,5.65 KEYPAD_BOX_2 0.15,3.05,1.75,5.65 KEYPAD_BOX_3 2.05,3.05,3.65,5.65 KEYPAD_BOX_4 -3.65,0.15,-2.05,2.75 KEYPAD_BOX_5 -1.76,0.15,-0.16,2.75 KEYPAD_BOX_6 0.15,0.15,1.75,2.75 KEYPAD_BOX_7 2.05,0.15,3.65,2.75 KEYPAD_BOX_8 -3.65,-2.75,-2.05,-0.15 KEYPAD_BOX_9 -1.76,-2.75,-0.16,-0.15 KEYPAD_BOX_A 0.15,-2.75,1.75,-0.15 KEYPAD_BOX_B 2.05,-2.75,3.65,-0.15 KEYPAD_BOX_C -3.65,-5.65,-2.05,-3.05 KEYPAD_BOX_D -1.76,-5.65,-0.16,-3.05 KEYPAD_BOX_E 0.15,-5.65,1.75,-3.05 KEYPAD_BOX_F 2.05,-5.65,3.65,-3.05 angle 0.0 OUTPUT_BITS 4 OUTPUT_NUM 2 177 HE_JUNC_4 376.5,-13 N_in083 N_in184 N_in292 LED_BOX -0.25,-0.25,0.25,0.25 angle 0.0 178 DD_KEYPAD_HEX 349.5,-12

OUT_076

OUT_183

OUT_275

OUT_374

KEYPAD_BOX_0 -3.65,3.05,-2.05,5.65 KEYPAD_BOX_1 -1.76,3.05,-0.16,5.65 KEYPAD_BOX_2 0.15,3.05,1.75,5.65 KEYPAD_BOX_3 2.05,3.05,3.65,5.65 KEYPAD_BOX_4 -3.65,0.15,-2.05,2.75 KEYPAD_BOX_5 -1.76,0.15,-0.16,2.75 KEYPAD_BOX_6 0.15,0.15,1.75,2.75 KEYPAD_BOX_7 2.05,0.15,3.65,2.75 KEYPAD_BOX_8 -3.65,-2.75,-2.05,-0.15 KEYPAD_BOX_9 -1.76,-2.75,-0.16,-0.15 KEYPAD_BOX_A 0.15,-2.75,1.75,-0.15 KEYPAD_BOX_B 2.05,-2.75,3.65,-0.15 KEYPAD_BOX_C -3.65,-5.65,-2.05,-3.05 KEYPAD_BOX_D -1.76,-5.65,-0.16,-3.05 KEYPAD_BOX_E 0.15,-5.65,1.75,-3.05 KEYPAD_BOX_F 2.05,-5.65,3.65,-3.05 angle 0.0 OUTPUT_BITS 4 OUTPUT_NUM 3 179 AA_LABEL 392,-81.5 LABEL_TEXT TEXT_HEIGHT 2 angle 0.0 180 AA_LABEL 436.5,-57.5 LABEL_TEXT 2-1 Multiplexer TEXT_HEIGHT 2 angle 0.0 181 AA_LABEL 392,-80 LABEL_TEXT Signal at > is 1 if X>Y, E is 1 if equal,  is 1 if XY TEXT_HEIGHT 2 angle 0.0 74 1 354.5,-9,372.5,-9 178 OUT_3 169 N_in0 75 1 354.5,-11,374,-11 178 OUT_2 170 N_in0 76 1 354.5,-15,377,-15 178 OUT_0 171 N_in0 77 1 355,-56,358,-56 176 OUT_3 172 N_in0 78 1 355,-58,360.5,-58 176 OUT_2 173 N_in0 79 1 355,-60,364,-60 176 OUT_1 174 N_in0 80 1 355,-62,367,-62 176 OUT_0 175 N_in0 81 0 385,-21,385,-9 -21 1 -9 2 1 385,-21,410.5,-21 157 IN_B_3 385 0 2 374.5,-9,385,-9 169 N_in1 385 0 82 0 386,-20,386,-11 -20 1 -11 2 1 386,-20,410.5,-20 157 IN_B_2 386 0 2 376,-11,386,-11 170 N_in1 386 0 83 1 354.5,-13,375.5,-13 178 OUT_1 177 N_in0 84 0 388,-19,388,-13 -19 1 -13 2 1 388,-19,410.5,-19 157 IN_B_1 388 0 2 377.5,-13,388,-13 177 N_in1 388 0 85 0 389.5,-18,389.5,-15 -18 1 -15 3 1 389.5,-18,410.5,-18 157 IN_B_0 389.5 0 3 379,-15,389.5,-15 171 N_in1 389.5 0 86 0 359,-55,359,-28 172 N_in3 -28 1 1 359,-28,410.5,-28 157 IN_3 359 0 87 0 361.5,-57,361.5,-27 173 N_in3 -27 1 1 361.5,-27,410.5,-27 157 IN_2 361.5 0 88 0 365,-59,365,-26 174 N_in3 -26 1 1 365,-26,410.5,-26 157 IN_1 365 0 89 0 368,-61,368,-25 175 N_in3 -25 1 1 368,-25,410.5,-25 157 IN_0 368 0 90 0 373.5,-58,373.5,-10 169 N_in2 -58 1 1 373.5,-58,412,-58 158 IN_B_3 373.5 0 91 0 375,-57,375,-12 170 N_in2 -57 1 1 375,-57,412,-57 158 IN_B_2 375 0 92 0 376.5,-56,376.5,-14 177 N_in2 -56 1 1 376.5,-56,412,-56 158 IN_B_1 376.5 0 93 0 378,-55,378,-16 171 N_in2 -55 1 1 378,-55,412,-55 158 IN_B_0 378 0 94 5 369,-62,412,-62 175 N_in1 158 IN_0 95 0 365,-63.5,365,-61 174 N_in2 -63.5 1 1 365,-63.5,412,-63.5 365 0 412 2 2 412,-63.5,412,-63 158 IN_1 -63.5 1 96 0 361.5,-64,361.5,-59 173 N_in2 -64 1 1 361.5,-64,412,-64 158 IN_2 361.5 0 97 0 359,-65,359,-57 172 N_in2 -65 1 1 359,-65,412,-65 158 IN_3 359 0 98 0 444.5,-54,444.5,-42 -54 1 -42 2 1 435,-54,444.5,-54 165 OUT 444.5 0 2 444.5,-42,452.5,-42 166 IN_0 444.5 0 99 0 443.5,-44.5,443.5,-41 -44.5 1 -41 2 1 435,-44.5,443.5,-44.5 164 OUT 443.5 0 2 443.5,-41,452.5,-41 166 IN_1 443.5 0 100 0 443.5,-40,443.5,-35.5 -40 2 -35.5 1 1 435,-35.5,443.5,-35.5 163 OUT 443.5 0 2 443.5,-40,452.5,-40 166 IN_2 443.5 0 101 0 446,-39,446,-26.5 -39 2 -26.5 1 1 435,-26.5,446,-26.5 162 OUT 446 0 2 446,-39,452.5,-39 166 IN_3 446 0 102 0 414,-73.5,414,-68 158 A_greater_B -73.5 1 1 414,-73.5,431,-73.5 414 0 431 2 2 431,-73.5,431,-55 165 IN_0 -73.5 1 103 0 416,-72.5,416,-68 158 A_equal_B -72.5 1 1 416,-72.5,428.5,-72.5 416 0 428.5 2 2 428.5,-72.5,428.5,-45.5 -72.5 1 -45.5 3 3 428.5,-45.5,431,-45.5 164 IN_0 428.5 2 104 0 426.5,-68,426.5,-36.5 -68 2 -36.5 1 1 426.5,-36.5,431,-36.5 163 IN_0 426.5 0 2 418,-68,426.5,-68 158 A_less_B 426.5 0 105 0 421,-53,421,-21.5 -53 2 -21.5 1 1 418.5,-21.5,421,-21.5 157 OUT_0 421 0 2 421,-53,431,-53 165 IN_1 421 0 106 0 422.5,-43.5,422.5,-22.5 -43.5 2 -22.5 1 1 418.5,-22.5,422.5,-22.5 157 OUT_1 422.5 0 2 422.5,-43.5,431,-43.5 164 IN_1 422.5 0 107 0 423.5,-34.5,423.5,-23.5 -34.5 2 -23.5 1 1 418.5,-23.5,423.5,-23.5 157 OUT_2 423.5 0 2 423.5,-34.5,431,-34.5 163 IN_1 423.5 0 108 0 424.5,-25.5,424.5,-24.5 -25.5 2 -24.5 1 1 418.5,-24.5,424.5,-24.5 157 OUT_3 424.5 0 2 424.5,-25.5,431,-25.5 162 IN_1 424.5 0 109 0 437,-51.5,437,-20.5 -51.5 8 -42 9 -33 10 -24 11 -20.5 1 1 437,-20.5,440,-20.5 167 OUT_0 437 0 8 433,-51.5,437,-51.5 165 SEL_0 437 0 9 433,-42,437,-42 164 SEL_0 437 0 10 433,-33,437,-33 163 SEL_0 437 0 11 433,-24,437,-24 162 SEL_0 437 0 125 0 429,-29.5,429,-27.5 266 OUT_0 -27.5 1 1 429,-27.5,431,-27.5 162 IN_0 429 0