17.3 REALIZATION OF BOOLEAN FUNCTIONS USING SWITCHES AND LOGIC GATES
Let it be required to realize the Boolean function, f = PQ + 
R. This Boolean function can be realized using switches as shown in Fig. 17.8. PQ and R represent AND operation and the positive sign represents the OR operation. Fig. 17.9 shows the realization of the Boolean function using logic gates.
Similarly, consider another Boolean function
f = PQ + 
(R + S)
This is realized using ...
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