
OBJECTIVE
Implementation of
Combinational Logic by
Programmable Logic Devices
CHAPTER 12
We learnt in Chapter 11 that instead of implementing a minimized circuit using
AND-OR arrays or NANDs or OR-AND arrays or NORs or ICs for the decod-
ers, encoders, multiplexers or demultiplexers, or binary arithmetic adders, adder/
subtractors, code converters, comparator, bit-wise 8-bit AND, OR, XOR circuits
or parity generators, a complex combinational circuit can be easily assembled
by programmable logic memories (ROM, EPROM, EEPROM or Flash or OTP).
In this chapter, we shall learn about two other forms of PLDs called PAL and
PLA. We shall also study the ...