Semiconductor Memory MCQs
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________ is an example of read/write memory.
- A. PROM
- B. EEPROM
- C. RAM
- D. MROM
- Correct Answer: Option C
A computerized self-diagnostic for a ROM test uses:
- A. the check-sum method
- B. a ROM listing
- C. ROM comparisons
- D. a checkerboard test
- Correct Answer: Option A
A nonvolatile type of memory that can be programmed and erased in sectors, rather than one byte at a time is:
- A. flash memory
- B. EPROM
- C. EEPROM
- D. MPROM
- Correct Answer: Option A
A technique of addressing storage cells on a dynamic RAM that sequentially uses the same inputs for the row and column addresses of the cell is called________.
- A. flash conversion
- B. dynamic refresh
- C. address multiplexing
- D. address strobe
- Correct Answer: Option C
Advantage(s) of an EEPROM over an EPROM is (are):
- 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
- Correct Answer: Option D
How many storage locations are available when a memory device has twelve address lines?
- A. 144
- B. 512
- C. 2048
- D. 4096
- Correct Answer: Option D
In general, _________ are used when a small amount of read/write is required.
- A. EEPROMs
- B. PROMs
- C. SRAMs
- D. DRAMs
- Correct Answer: Option C
Memory that loses its contents when power is lost is:
- A. nonvolatile
- B. volatile
- C. random
- D. static
- Correct Answer: Option B
Refreshing DRAM typically must occur every ________.
- A. 2 s
- B. 2 ms
- C. 8 s
- D. 8 ms
- Correct Answer: Option B
Select the best description of read-only memory (ROM).
- 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
- Correct Answer: Option B
Select the best description of the fusible-link PROM.
- A. user programmable, one-time programmable
- B. manufacturer programmable, one-time programmable
- C. user programmable, reprogrammable
- D. manufacturer programmable, reprogrammable
- Correct Answer: Option A
The access time (tacc) of a memory IC is governed by the IC’s:
- A. internal address buffer
- B. internal address decoder
- C. volatility
- D. internal address decoder and volatility
- Correct Answer: Option B
The binary data stored in an EEPROM is___________.
- A. volatile
- B. permanent
- C. refreshed
- D. erasable
- Correct Answer: Option D
The data stored in a Mask ROM (MROM) is ___________.
- A. permanent
- B. volatile
- C. erasable
- D. temporary
- Correct Answer: Option A
The periodic recharging of DRAM memory cells is called ___________.
- A. multiplexing
- B. bootstrapping
- C. refreshing
- D. flashing
- Correct Answer: Option C
The process of entering data into the ROM is called ___________.
- A. burning in
- B. configuration
- C. internal decoding
- D. addressing
- Correct Answer: Option A
The time interval between the memory receiving a new address input and the data being available is called _________.
- A. access time
- B. bus speed
- C. read/write speed
- D. write/data speed
- Correct Answer: Option A
To reduce the number of pins on the IC package, manufacturers often use ___________.
- A. MOSFET architecture
- B. address multiplexing
- C. address decoding
- D. address demultiplexing
- Correct Answer: Option B
What is the principal advantage of using address multiplexing with DRAM memory?
- 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
- Correct Answer: Option C
Which of the following best describes nonvolatile memory?
- 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
- Correct Answer: Option A
Which of the following best describes static memory devices?
- A. memory devices that are magnetic in nature and do not require constant refreshing
- B. semiconductor memory devices in which stored data is retained as long as power is applied
- C. memory devices that are magnetic in nature and require constant refreshing
- D. semiconductor memory devices in which stored data will not be retained with the power applied unless constantly refreshed
- Correct Answer: Option B
Which of the following memories uses a MOSFET and a capacitor as its memory cell?
- A. SRAM
- B. DRAM
- C. ROM
- D. DROM
- Correct Answer: Option B
Which of the following RAM timing parameters determine(s) its operating speed?
- A. tacc
- B. taa and tacs
- C. t1 and t3
- D. trc and twc
- Correct Answer: Option C