4.

(Continued)

first step is to identify the overall type of circuit. For example, the Boolean expression

A B C D can easily be recognized as a four-input AND gate. To convert this expression to

a logic diagram, draw a logic symbol for an AND gate and label the inputs A, B, C, and D.

The completed conversion is shown below.

Convert the Boolean expression below to a logic diagram and indicate the inputs.

ALFY

SOLUTION:

5.

When converting from a Boolean expression to a logic diagram, the first step is to identify

the overall circuit type. This does not present much of a problem with first- order logic, but a

thorough understanding of the basics is necessary before proceeding to the more complex

circuits. For example, the Boolean expression A+B+C+D is identified as an OR gate with

four inputs. All that is necessary to convert this expression to a logic diagram is to draw a

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