Semiconductor Memory problems
- 1. Which of the following memories uses a MOSFET and a capacitor as its memory cell?
Options- A. SRAM
- B. DRAM
- C. ROM
- D. DROM Discuss
Correct Answer: DRAM
- 2. The access time (tacc) of a memory IC is governed by the IC's:
Options- A. internal address buffer
- B. internal address decoder
- C. volatility
- D. internal address decoder and volatility Discuss
Correct Answer: internal address decoder
- 3. What is the principal advantage of using address multiplexing with DRAM memory?
Options- A. reduced memory access time
- B. reduced requirement for constant refreshing of the memory contents
- C. reduced pin count and decrease in package size
- D. no requirement for a chip-select input line, thereby reducing the pin count Discuss
Correct Answer: reduced pin count and decrease in package size
- 4. Advantage(s) of an EEPROM over an EPROM is (are):
Options- A. the EPROM can be erased with ultraviolet light in much less time than an EEPROM
- B. the EEPROM can be erased and reprogrammed without removal from the circuit
- C. the EEPROM has the ability to erase and reprogram individual words
- D. the EEPROM can erase and reprogram individual words without removal from the circuit Discuss
Correct Answer: the EEPROM can erase and reprogram individual words without removal from the circuit
- 5. Which of the following best describes nonvolatile memory?
Options- A. memory that retains stored information when electrical power is removed
- B. memory that loses stored information when electrical power is removed
- C. magnetic memory
- D. nonmagnetic memory Discuss
Correct Answer: memory that retains stored information when electrical power is removed
- 6. Select the best description of read-only memory (ROM).
Options- A. nonvolatile, used to store information that changes during system operation
- B. nonvolatile, used to store information that does not change during system operation
- C. volatile, used to store information that changes during system operation
- D. volatile, used to store information that does not change during system operation Discuss
Correct Answer: nonvolatile, used to store information that does not change during system operation
- 7. A computerized self-diagnostic for a ROM test uses:
Options- A. the check-sum method
- B. a ROM listing
- C. ROM comparisons
- D. a checkerboard test Discuss
Correct Answer: the check-sum method
- 8. Memory that loses its contents when power is lost is:
Options- A. nonvolatile
- B. volatile
- C. random
- D. static Discuss
Correct Answer: volatile
- 9. Select the best description of the fusible-link PROM.
Options- A. user programmable, one-time programmable
- B. manufacturer programmable, one-time programmable
- C. user programmable, reprogrammable
- D. manufacturer programmable, reprogrammable Discuss
Correct Answer: user programmable, one-time programmable
- 10. Which of the following RAM timing parameters determine(s) its operating speed?
Options- A. tacc
- B. taa and tacs
- C. t1 and t3
- D. trc and twc Discuss
Correct Answer: t1 and t3
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