Page 193 - FUNDAMENTALS OF COMPUTER
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NPP Number System, Boolean Algebra and Logic Circuits 193
Bubbled OR and NOT Gates can be ~~ëS> OR VWm NOT JoQ>m| H$mo NAND _| ~XbZo
converted into NAND: na:
A
B
Problem 3.48 àíZ 3.48
Implement XNOR gate using NOR gates: XNOR JoQ> H$mo NOR JoQ>m| H$s ghm`Vm go
~ZmAmo:
Solution: hc:
The symbol and output expression for XNOR JoQ> H$m g§Ho$V VWm CgH$m gyÌ {ZåZmZwgma h¡…
XNOR gate is: NPP
A
B Y = A.B + A.B
The expression can be simplified in POS Bgr g_rH$aU H$mo POS ñdê$n _| {ZåZmZwgma
form as follows: Xem©`m Om gH$Vm h¡…
Y = (A+ B ) (A. + ) B
The Basic gate circuit is: _yb^yV JoQ>m| go n[anW ~ZmZo na:
A
B
Y
Convert OR gates into NOR gates: XmoZm| OR JoQ>m| H$mo NOR _| ~XbZo na…
A
B
Y
