27.
Convert the Boolean expression below to a logic diagram.
(LA+S) ER
SOLUTION:
28.
The logic diagram which represents the Boolean expression U (SM+A (R+I) + NE] is
drawn systematically and logically as follows:
Step 1. Substituting the letter X for the quantity within brackets [SM+A (R+I) +NE]
simplifies the expression to UX. The vinculum covers the entire two-input
AND gate which is identified as the overall NAND gate shown below.
2-23
IT 0343
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