Version 4
SHEET 1 1532 932
WIRE 1184 -192 1152 -192
WIRE 1408 -176 1376 -176
WIRE 1184 -160 1152 -160
WIRE -1056 -16 -1072 -16
WIRE -800 -16 -832 -16
WIRE -544 -16 -576 -16
WIRE -288 -16 -320 -16
WIRE -32 -16 -64 -16
WIRE 224 -16 192 -16
WIRE 480 -16 448 -16
WIRE 736 -16 704 -16
WIRE 992 -16 960 -16
WIRE 1328 0 1328 -80
WIRE -1056 16 -1072 16
WIRE -800 16 -832 16
WIRE -544 16 -576 16
WIRE -288 16 -320 16
WIRE -32 16 -64 16
WIRE 224 16 192 16
WIRE 480 16 448 16
WIRE 736 16 704 16
WIRE 992 16 960 16
WIRE -1056 48 -1072 48
WIRE -800 48 -832 48
WIRE -544 48 -576 48
WIRE -288 48 -320 48
WIRE -32 48 -64 48
WIRE 224 48 192 48
WIRE 480 48 448 48
WIRE 736 48 704 48
WIRE 992 48 960 48
WIRE -1056 80 -1072 80
WIRE -800 80 -832 80
WIRE -544 80 -576 80
WIRE -288 80 -320 80
WIRE -32 80 -64 80
WIRE 224 80 192 80
WIRE 480 80 448 80
WIRE 736 80 704 80
WIRE 992 80 960 80
WIRE 1200 80 1168 80
WIRE 1200 112 1168 112
WIRE 1440 128 1408 128
WIRE 1200 144 1168 144
WIRE 1440 160 1408 160
WIRE 1200 176 1168 176
WIRE 1440 192 1408 192
WIRE 1200 208 1168 208
WIRE 1440 224 1408 224
WIRE 1200 240 1168 240
WIRE 1200 272 1168 272
WIRE 1200 304 1168 304
WIRE 1024 352 1024 288
WIRE -1056 368 -1088 368
WIRE -800 368 -832 368
WIRE -544 368 -576 368
WIRE -288 368 -320 368
WIRE -32 368 -64 368
WIRE 224 368 192 368
WIRE 480 368 448 368
WIRE 736 368 704 368
WIRE 992 368 960 368
WIRE 1008 368 992 368
WIRE 1024 384 1024 352
WIRE -1056 400 -1088 400
WIRE -800 400 -832 400
WIRE -544 400 -576 400
WIRE -288 400 -320 400
WIRE -32 400 -64 400
WIRE 224 400 192 400
WIRE 480 400 448 400
WIRE 736 400 704 400
WIRE 992 400 960 400
WIRE 1008 400 992 400
WIRE 1024 416 1024 384
WIRE -1056 432 -1088 432
WIRE -800 432 -832 432
WIRE -544 432 -576 432
WIRE -288 432 -320 432
WIRE -32 432 -64 432
WIRE 224 432 192 432
WIRE 480 432 448 432
WIRE 736 432 704 432
WIRE 992 432 960 432
WIRE 1008 432 992 432
WIRE 1024 448 1024 416
WIRE -1056 464 -1088 464
WIRE -800 464 -832 464
WIRE -544 464 -576 464
WIRE -288 464 -320 464
WIRE -32 464 -64 464
WIRE 224 464 192 464
WIRE 480 464 448 464
WIRE 736 464 704 464
WIRE 992 464 960 464
WIRE 1008 464 992 464
FLAG -944 -96 VDD
IOPIN -944 -96 In
FLAG -944 144 Clock
IOPIN -944 144 In
FLAG -1072 -16 B3
IOPIN -1072 -16 In
FLAG -1072 16 B2
IOPIN -1072 16 In
FLAG -1072 48 B1
IOPIN -1072 48 In
FLAG -1072 80 B0
IOPIN -1072 80 In
FLAG 992 368 B3D
FLAG 992 400 B2D
FLAG 992 432 B1D
FLAG 992 464 B0D
FLAG 1056 464 B0Di
FLAG 1056 432 B1Di
FLAG 1056 400 B2Di
FLAG 1056 368 B3Di
FLAG 1264 0 VDD
FLAG 1440 128 S3
IOPIN 1440 128 Out
FLAG 1440 160 S2
IOPIN 1440 160 Out
FLAG 1440 192 S1
IOPIN 1440 192 Out
FLAG 1440 224 S0
IOPIN 1440 224 Out
FLAG 1328 368 VDD
FLAG 1168 112 B3
FLAG 1168 176 B2
FLAG 1168 240 B1
FLAG 1168 304 B0
FLAG 1168 272 B0Di
FLAG 1168 208 B1Di
FLAG 1168 144 B2Di
FLAG 1168 80 B3Di
FLAG 992 80 I0
FLAG 992 48 I1
FLAG 992 16 I2
FLAG 992 -16 I3
FLAG -1088 464 I0
FLAG -1088 432 I1
FLAG -1088 400 I2
FLAG -1088 368 I3
FLAG -688 -96 VDD
FLAG -688 144 Clock
FLAG -432 -96 VDD
FLAG -432 144 Clock
FLAG -176 -96 VDD
FLAG -176 144 Clock
FLAG 80 -96 VDD
FLAG 80 144 Clock
FLAG 336 -96 VDD
FLAG 336 144 Clock
FLAG 592 -96 VDD
FLAG 592 144 Clock
FLAG 848 -96 VDD
FLAG 848 144 Clock
FLAG -944 288 VDD
FLAG -944 528 Clock
FLAG -688 288 VDD
FLAG -688 528 Clock
FLAG -432 288 VDD
FLAG -432 528 Clock
FLAG -176 288 VDD
FLAG -176 528 Clock
FLAG 80 288 VDD
FLAG 80 528 Clock
FLAG 336 288 VDD
FLAG 336 528 Clock
FLAG 592 288 VDD
FLAG 592 528 Clock
FLAG 848 288 VDD
FLAG 848 528 Clock
FLAG 1024 288 VDD
FLAG 1408 -176 S4
IOPIN 1408 -176 Out
FLAG 1152 -160 B3
FLAG 1152 -192 B3Di
FLAG 1232 -272 VDD
SYMBOL 4_bit_adder 1232 336 R0
SYMATTR InstName X19
SYMBOL 4_bit_register -1024 112 R0
SYMATTR InstName X20
SYMBOL 4_bit_register -768 112 R0
SYMATTR InstName X24
SYMBOL 4_bit_register -512 112 R0
SYMATTR InstName X25
SYMBOL 4_bit_register -256 112 R0
SYMATTR InstName X26
SYMBOL 4_bit_register -1024 496 R0
SYMATTR InstName X27
SYMBOL 4_bit_register -768 496 R0
SYMATTR InstName X28
SYMBOL 4_bit_register -512 496 R0
SYMATTR InstName X29
SYMBOL 4_bit_register -256 496 R0
SYMATTR InstName X30
SYMBOL 4_bit_register 0 112 R0
SYMATTR InstName X31
SYMBOL 4_bit_register 256 112 R0
SYMATTR InstName X32
SYMBOL 4_bit_register 512 112 R0
SYMATTR InstName X33
SYMBOL 4_bit_register 768 112 R0
SYMATTR InstName X34
SYMBOL 4_bit_register 768 496 R0
SYMATTR InstName X35
SYMBOL 4_bit_register 512 496 R0
SYMATTR InstName X36
SYMBOL 4_bit_register 256 496 R0
SYMATTR InstName X37
SYMBOL 4_bit_register 0 496 R0
SYMATTR InstName X38
SYMBOL inverter 1008 368 R0
SYMATTR InstName X1
SYMBOL inverter 1008 400 R0
SYMATTR InstName X2
SYMBOL inverter 1008 432 R0
SYMATTR InstName X3
SYMBOL inverter 1008 464 R0
SYMATTR InstName X4
SYMBOL Adderbit 1200 -96 R0
SYMATTR InstName X5