
11.36 | Chapter 11
ExamplE 11.15 Design a PLA circuit that converts BCD code to Excess-3 code.
Solution Simplied Boolean equations are given by Eqs. (11.17), (11.18), (11.19) and (11.20).
Number of inputs, n = 4.
Number of outputs, m = 4.
First output function, d
0
has one product terms. Second output function, d
1
has two prod-
uct terms. Third output function, d
2
has three product terms and fourth output function, d
3
has three product terms.
Number of AND gates required =
Number of OR gates required = m = 2.
Number of exible links as inputs of AND gate =
Number of xed links between outputs of AND gates and inputs of OR gates ...