Version 4
SHEET 1 880 680
WIRE 112 32 96 32
WIRE 208 32 192 32
WIRE 96 48 96 32
WIRE 192 48 192 32
WIRE 336 48 304 48
WIRE 448 48 400 48
WIRE 336 80 304 80
WIRE 144 240 112 240
WIRE 144 272 112 272
WIRE 256 272 208 272
WIRE 352 304 320 304
WIRE 464 304 416 304
WIRE 352 336 320 336
WIRE 144 368 112 368
WIRE 256 368 208 368
WIRE 144 400 112 400
FLAG 96 128 0
FLAG 112 32 A
FLAG 192 128 0
FLAG 208 32 B
FLAG 464 304 A2
FLAG 256 368 A3
FLAG 112 240 A
FLAG 112 368 A
FLAG 112 272 B
FLAG 304 48 A
FLAG 304 80 B
FLAG 448 48 Y0
FLAG 112 400 B
FLAG 320 336 A3
FLAG 256 272 _A1
FLAG 320 304 _A1
SYMBOL voltage 96 32 R0
WINDOW 3 -4 131 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR Value PULSE(0 1 10m 100n 100n 10m 20m)
SYMATTR InstName V1
SYMBOL voltage 192 32 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value PULSE(0 1 20m 100n 100n 20m 40m)
SYMBOL Digital\\and 176 192 R0
WINDOW 3 16 40 Left 2
SYMATTR Value td=td
SYMATTR InstName A1
SYMBOL Digital\\and 384 256 R0
WINDOW 3 16 40 Left 2
SYMATTR Value td=td
SYMATTR InstName A2
SYMBOL Digital\\or 176 320 R0
WINDOW 3 -8 24 Left 2
SYMATTR Value td=td
SYMATTR InstName A3
SYMBOL Digital\\xor 384 0 R0
WINDOW 3 16 40 Left 2
SYMATTR Value td=td
SYMATTR InstName A0
TEXT 80 -24 Left 2 !.tran 40m
TEXT 80 -8 Left 2 !.param td=1u