Digital Computer Electronics problems
- 1. Conversion of an octal number 1258 to its decimal number is
Options- A. 9010
- B. 8510
- C. 8710
- D. 9910
- E. None of the above Discuss
Correct Answer: 8510
- 2. Standard TTL has a multiple emitter input transistor and a _____ output
Options- A. totem-pole
- B. bipolar
- C. register
- D. transistor
- E. None of the above Discuss
Correct Answer: totem-pole
- 3. The digits used in a binary number system are _____ and _____
Options- A. 9 and 0
- B. 0 and 1
- C. 1 and 2
- D. 3 and 4
- E. None of the above Discuss
Correct Answer: 0 and 1
- 4. Conversion of binary number 10010102 to to its decimal number is
Options- A. 7410
- B. 9710
- C. 7210
- D. 6310
- E. None of the above Discuss
Correct Answer: 7410
- 5. A 2's-complement adder-subtracter can add or subtract binary numbers. Sign-magnitude numbers represent _____ decimal numbers, and 2's complements stand for _____ decimal numbers.
Options- A. hexa, sign
- B. sign, hexa
- C. positive, negative
- D. negative, positive
- E. None of the above Discuss
Correct Answer: positive, negative
- 6. Conversion of an octal number 1068 to binary number is
Options- A. 11100102
- B. 10001102
- C. 11001102
- D. 100001102
- E. None of the above Discuss
Correct Answer: 10001102
- 7. The 2764 is 65,536-bit EPROM organized as 8,192 words of 8 bits each. How many address lines does it have?
Options- A. 12
- B. 14
- C. 13
- D. 8
- E. None of the above Discuss
Correct Answer: 13
- 8. A logic circuit which is used to change a BCD number into an equivalent decimal number is
Options- A. decoder
- B. encoder
- C. multiplexer
- D. code converter
- E. None of the above Discuss
Correct Answer: decoder
- 9. Small-scale integration, abbreviated _____ refers to fewer than 12 gates on the same chip. Medium-scale integration (MSI) means 12 to 100 gates per chip. And large-scale integration (LSI) refers to more than _____ gates per chip.
Options- A. SSI, 75
- B. SSI, 100
- C. SSI, 1000
- D. SSI, 10000
- E. None of the above Discuss
Correct Answer: SSI, 100
- 10. The _____ is ultraviolet-light-erasable and electrically programmable. This allows the user to erase and store until programs and data are perfected.
Options- A. EPROM
- B. ROM
- C. PROM
- D. RAM
- E. None of the above Discuss
Correct Answer: EPROM
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