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Q.

To avoid loading during read operation, the device used is

A

latch

B

flipflop

C

buffer

D

tristate buffer

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MCQ

1.

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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2.

What is correct range of frequency for 8257?

A

500Hz to 3MHz.

B

250Hz to 2MHz.

C

250Hz to 3MHz.

D

500Hz to 2MHz.

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3.

To avoid loading during read operation, the device used is

A

latch

B

flipflop

C

buffer

D

tristate buffer

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4.

In which type of communication, the interface gets a single byte of data from the microprocessor and sends it bit by bit to the other system serially and vice-a-versa?

A

Parallel Communication Interface

B

Serial Communication Interface

C

Both A and B

D

None of the above

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5.

The latch or IC 74LS373 acts as

A

good input port

B

bad input port

C

good output port

D

bad output port

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