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Q.

How many ports 8255A has?

A

2

B

3

C

4

D

5

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Similar Questions

MCQ

1.

Which mode generates a strobe in response to an externally generated signal?

A

Mode 3

B

Mode 4

C

Mode 5

D

Mode 6

Discussion

MCQ

2.

The ______ is a general purpose programmable I/O device designed to transfer the data from I/O to interrupt I/O.

A

8285A

B

8241A

C

8255A

D

8251A

Discussion

MCQ

3.

It is a tri-state, bi-directional, 8-bit buffer, which is used to interface the 8253/54 to the system data bus.

A

Read/Write Logic

B

Data Bus Buffer

C

system data bus

D

System Buffer

Discussion

MCQ

4.

Which mode can be used as a mono stable multi-vibrator?

A

Mode 0

B

Mode 1

C

Mode 2

D

Mode 3

Discussion

MCQ

5.

How many ports 8255A has?

A

2

B

3

C

4

D

5

Discussion

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