The periodic recharging of DRAM memory cells is called ________. multiplexing bo

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Question
The periodic recharging of DRAM memory cells is called ________.
Options
A. multiplexing
B. bootstrapping
C. refreshing
D. flashing

Correct Answer

refreshing

Memory and Storage problems

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1. Which of the following best describes volatile 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

2. Which of the following faults will the checkerboard pattern test for in RAM?
Options
A. Short between adjacent cells
B. Ability to store both 0s and 1s
C. Dynamically introduced errors between cells
D. All of the above

5. The RAM circuit given below is suspected of being bad. A check with a logic probe shows pulse activity on all of the address lines and data inputs. The / line and inputs are forced HIGH and the data output lines are checked with the logic probe. Q0, Q2, and Q3 show a dim indication on the logic probe; Q1 indicates a HIGH level on the logic probe. What, if anything, is wrong with the circuit?
Options
A. The Q0, Q2, and Q3 output lines are open; the chip is defective.
B. The Q1 line appears to be shorted to V_cc; replace the chip.
C. The outputs should be active only when the / line is held LOW, so the circuit is behaving normally considering the fact that the line is HIGH.
D. The EN input should be forced HIGH and the outputs rechecked; if they are still giving the same indications as before, then the three outputs are definitely open and the IC will have to be replaced.

6. Which of the following best describes EPROMs?
Options
A. EPROMs can be programmed only once.
B. EPROMs can be erased by UV.
C. EPROMs can be erased by shorting all inputs to the ground.
D. All of the above.

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