Digital Computer Electronics – Section 2

46. Conversion of an octal number 1108 to its decimal number is

A. 7010
B. 7210
C. 7310
D. 11010
E. None of the above

Correct Answer:  B. 7210

47. Computer ICs work reliably because they are based on _____ design.

A. Top-bottom
B. System
C. Two-stage
D. Two-states
E. None of the above

Correct Answer:  D. Two-states

48. The maximum count which a 6-bit binary word can represent is

A. 36
B. 64
C. 63
D. 65
E. None of the above

Correct Answer:  C. 63

49. A half-adder is also known as:

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

Correct Answer:  D. EX-OR circuit

50. Why are digital circuits easier to design than analog circuits?

A. they do not control electricity precisely over a wide range
B. they are made in the form of ICs
C. all elements of digital circuit are from the same family
D. they are smaller in size
E. None of the above

Correct Answer:  A. they do not control electricity precisely over a wide range

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