19.

21. The objective of using Boolean algebra in digital-computer

a. (A+B+C) D

study is to determine the 'truth value' of a combination of two

b. (EF) +G

or more statements. For any Boolean function, there is a

c. (H+J) K(L+M)

corresponding truth table, which shows in tabulated form the

d. N+(OPQ)

true condition of the function for each occasion in which

conditions can be assigned to its variables. In binary

Boolean algebra, 0 and 1 are the symbols assigned to the

variables of any function.

The objective of using Boolean algebra in digital-computer

study is to determine the ______________________________

of the combination of two or more statements.

20

22. In designing logic circuits for a computer, the first step is to

construct a truth table. The truth table not only provides a

ready reference for use in analyzing the operating theory of

the circuit, but also is useful in developing the overall signal-

flow diagram.

The first step in designing logic circuits for computers is to

construct a ___________________________________.

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