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Q.

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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Similar Questions

MCQ

1.

In which mode, the CPU periodically reads an internal flag of 8279 to check whether any key is pressed or not with key pressure?

A

Interrupt mode

B

Polled mode

C

Decoded Mode

D

Encoded Mode

Discussion

MCQ

2.

The chip 74LS245 is

A

bidirectional buffer

B

8-bit input port

C

one that has 8 buffers

D

all of the mentioned

Discussion

MCQ

3.

To avoid loading during read operation, the device used is

A

latch

B

flipflop

C

buffer

D

tristate buffer

Discussion

MCQ

4.

What is correct range of frequency for 8257?

A

500Hz to 3MHz.

B

250Hz to 2MHz.

C

250Hz to 3MHz.

D

500Hz to 2MHz.

Discussion

MCQ

5.

In 74LS245, if DIR is 1, then the direction is from

A

inputs to outputs

B

outputs to inputs

C

source to sink

D

sink to source

Discussion

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