Version 4
SHEET 1 880 680
WIRE 16 -80 -64 -80
WIRE 48 -80 16 -80
WIRE 256 -16 256 -64
WIRE 80 32 -16 32
WIRE 512 48 432 48
WIRE 464 80 432 80
WIRE 464 128 464 80
WIRE 464 128 32 128
WIRE 256 176 256 -16
WIRE 80 224 -16 224
WIRE 512 240 432 240
WIRE 464 272 432 272
WIRE 32 288 32 128
WIRE 80 288 32 288
WIRE 464 336 464 272
WIRE 464 336 32 336
WIRE 256 352 256 176
WIRE 80 400 -16 400
WIRE 512 416 432 416
WIRE 464 448 432 448
WIRE 32 464 32 336
WIRE 80 464 32 464
WIRE 464 512 464 448
WIRE 464 512 32 512
WIRE 256 528 256 352
WIRE 80 576 -16 576
WIRE 512 592 432 592
WIRE 32 640 32 512
WIRE 80 640 32 640
FLAG -16 32 D0
IOPIN -16 32 In
FLAG -16 224 D1
IOPIN -16 224 In
FLAG 512 48 Out0
IOPIN 512 48 Out
FLAG -16 400 D2
IOPIN -16 400 In
FLAG -16 576 D3
IOPIN -16 576 In
FLAG 512 240 Out1
IOPIN 512 240 Out
FLAG 512 416 Out2
IOPIN 512 416 Out
FLAG 256 -64 VDD
FLAG -64 -80 VDD
IOPIN -64 -80 In
FLAG 16 -80 VDD
FLAG 512 592 Out3
IOPIN 512 592 Out
FLAG 80 96 0
FLAG 80 608 VDD
FLAG 80 64 VDD
FLAG 80 432 VDD
FLAG 80 256 0
SYMBOL full_adder 32 80 R0
SYMATTR InstName X1
SYMBOL full_adder 32 272 R0
SYMATTR InstName X2
SYMBOL full_adder 32 448 R0
SYMATTR InstName X3
SYMBOL full_adder 32 624 R0
SYMATTR InstName X4