Digital Computer Electronics – Section 5

21. The _____ gate has two or more input signals. All inputs must be high to get a high output

A. OR
B. NAND
C. AND
D. NOR
E. None of the above

Correct Answer:  C. AND

22. Conversion of an octal number 1428 to binary number is

A. 11000102
B. 1101102
C. 11000112
D. 11011012
E. None of the above

Correct Answer:  A. 11000102

23. Conversion of hexadecimal number 93FA16 to it’s binary number equivalent is

A. 10010011111110102
B. 100100111111101112
C. 1100111111100112
D. 1111100001112
E. None of the above

Correct Answer:  A. 10010011111110102

24. BCD numbers are useful whenever _____ information is transferred into or out of a digital system.

A. decimal
B. binary
C. ASCII
D. hexadecimal
E. None of the above

Correct Answer:  A. decimal

25. A NOR gate recognizes only the input word whose bits are _____

A. 0’s and 1’s
B. 1’s
C. 0’s
D. 0’s or 1’s
E. None of the above

Correct Answer:  C. 0’s

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