21. truth value
23. The objective of using Boolean algebra in digital-computer
study is to determine the________________________________________
of the combination of ____________________ or ____________________
statements.
22. truth table
24. The number of possible truth combinations of a given number
(n) of binary variables is 2n.
2 binary variables = 2n = 22 = 4 combinations
3 binary variables = 2n = 23 = 8 combinations
4 binary variables = 2n = 24 = 16 combinations
To construct a truth table for the Boolean expression AB will
require 22, or 4, rows--one row for each truth combination, as
indicated below.
A
B
AB
0
0
0
0
1
0
1
0
0
1
1
1
How many possible truth combinations are there for the
following Boolean expressions?
a. DE
d. N+A+D
b. NREV
e. EZ+RA
c. L+A
f. NAVY
1-17
IT 0346
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