Discussion
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- Question
When a RAM module passes the checkerboard test it is:
Options- A. able to read and write only 1s.
- B. faulty.
- C. probably good.
- D. able to read and write only 0s.
- Correct Answer
- probably good.
- 1. Which type of ROM can be erased by UV light?
Options- A. ROM
- B. mask ROM
- C. EPROM
- D. EEPROM Discuss
- 2. Which is not characteristic of a shift register?
Options- A. Serial in/parallel in
- B. Serial in/parallel out
- C. Parallel in/serial out
- D. Parallel in/parallel out Discuss
- 3. Computers operate on data internally in a ________ format.
Options- A. tristate
- B. universal
- C. parallel
- D. serial Discuss
- 4. In a 4-bit Johnson counter sequence there are a total of how many states, or bit patterns?
Options- A. 1
- B. 2
- C. 4
- D. 8 Discuss
- 5. The primary purpose of a three-state buffer is usually:
Options- A. to provide isolation between the input device and the data bus
- B. to provide the sink or source current required by any device connected to its output without loading down the output device
- C. temporary data storage
- D. to control data flow Discuss
- 6. The refresh period for capacitors used in DRAMs is ________.
Options- A. 2 ms
- B. 2 µs
- C. 64 ms
- D. 64 µs Discuss
- 7. ROMs retain data when the ________.
Options- A. power is off
- B. power is on
- C. system is down
- D. all of the above Discuss
- 8. Microprocessors and memory ICs are generally designed to drive only a single TTL load. Therefore, if several inputs are being driven from the same bus, any memory IC must be ________.
Options- A. buffered
- B. decoded
- C. addressed
- D. stored Discuss
- 9. Describe the timing diagram of a write operation.
Options- A. First the data is set on the data bus and the address is set, then the write pulse stores the data.
- B. First the address is set, then the data is set on the data bus, and finally the read pulse stores the data.
- C. First the write pulse stores the data, then the address is set, and finally the data is set on the data bus.
- D. First the data is set on the data bus, then the write pulse stores the data, and finally the address is set. Discuss
- 10. Which of the following RAM timing parameters determine its operating speed?
Options- A. tACC
- B. tAA and tACS
- C. tCO and tOD
- D. tRC and tWC Discuss
Memory and Storage problems
Search Results
Correct Answer: EPROM
Correct Answer: Serial in/parallel in
Correct Answer: parallel
Correct Answer: 8
Correct Answer: to provide isolation between the input device and the data bus
Correct Answer: 2 ms
Correct Answer: all of the above
Correct Answer: buffered
Correct Answer: First the data is set on the data bus and the address is set, then the write pulse stores the data.
Correct Answer: tRC and tWC
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