Digital Computer Electronics problems
- 1. How many full and half-adders are required to add 16-bit numbers?
Options- A. 8 half-adders, 8 full-adders
- B. 1 half-adders, 15 full-adders
- C. 16 half-adders, no full-adders
- D. 4 half-adders, 12 full-adders
- E. None of the above Discuss
Correct Answer: 1 half-adders, 15 full-adders
- 2. Conversion of an octal number 738 to binary number is
Options- A. 1101112
- B. 1111002
- C. 1100102
- D. 1110112
- E. None of the above Discuss
Correct Answer: 1110112
- 3. An odd-parity generator produces an odd-parity bit to go along with the data. The parity of the transmitted data is _____ An XOR gate can test each received word for parity rejecting words with _____ parity.
Options- A. odd, even
- B. high, low
- C. low, high
- D. even, odd
- E. None of the above Discuss
Correct Answer: odd, even
- 4. A half-adder adds _____ bits
Options- A. 16
- B. 8
- C. 10
- D. 2
- E. None of the above Discuss
Correct Answer: 2
- 5. The term sum-of-products in boolean algebra means
Options- A. The AND function of several OR functions
- B. The OR function of several AND functions
- C. The OR function of several OR functions
- D. The AND function of several AND functions
- E. None of the above Discuss
Correct Answer: The OR function of several AND functions
- 6. A typical microcomputer may have up to 65,536 registers in its memory. Each of these registers, usually called a _____
Options- A. address
- B. memory location
- C. registers
- D. chip
- E. None of the above Discuss
Correct Answer: memory location
- 7. Conversion of binary number 100000000002 to decimal number is
Options- A. 102410
- B. 103410
- C. 112410
- D. 103710
- E. None of the above Discuss
Correct Answer: 102410
- 8. The 2-input XOR gate has a high output only when the input bits are _____
Options- A. even
- B. different
- C. low
- D. high
- E. None of the above Discuss
Correct Answer: different
- 9. A gate is a logic circuit with one or more input signals but _____ output signal.
Options- A. two
- B. double
- C. one
- D. more than one
- E. None of the above Discuss
Correct Answer: one
- 10. Conversion of decimal number 9910 to it's binary number equivalent is
Options- A. 11000112
- B. 1000112
- C. 11100012
- D. 111 10002
- E. None of the above Discuss
Correct Answer: 11000112
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