Digital Systems: Principles and Design

Code Converters, Comparators

and Other Logic

Processing Circuits

In Chapter 9, we learnt that AND-OR arrays, OR-AND arrays, NANDs and NORs are

the building blocks of combinational logic circuits. In Chapter 10, we learnt that full

adder circuits, decoders, encoders and multiplexers can also be used as the bigger

building blocks for the logic design.

We will learn some important logic processing circuits, namely, code converters, digital

comparator for magnitude and equality, parity generators and checkers, and bit-wise

AND, OR, NOT logic processing circuits.

OBJECTIVE

11.1 CODE CONVERTERS

11.1.1 Codes for Decimal Numbers

11.1.1.1 Common BCD Code

Recall the ...