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MCQ

Q.

DMA stands for?

A

Display Memory Access

B

Directly Memory Access

C

Device Memory Access

D

Direct Memory Access

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1.

To avoid loading during read operation, the device used is

A

latch

B

flipflop

C

buffer

D

tristate buffer

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2.

Which mode allows 8/16 character multiplexed displays to be organized as dual 4-bit/single 8-bit display units?

A

Display Entry

B

Display Scan

C

Strobed Input

D

Scanned Keyboard Mode

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3.

The operation, IOWR (active low) performs

A

write operation on input data

B

write operation on output data

C

read operation on input data

D

read operation on output data

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4.

The example of output device is

A

CRT display

B

7-segment display

C

Printer

D

All of the mentioned

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5.

In memory-mapped scheme, the devices are viewed as

A

distinct I/O devices

B

memory locations

C

only input devices

D

only output devices

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