Microcontroller Questions

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11.

In 8086 microprocessor , the address bus is ________ bit wide

A

10 bit

B

20 bit

C

16 bit

D

12 bit

Correct Answer: B

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12.

What is the file extension is used to load in a microcontroller to execute an instruction?

A

.doc

B

.c

C

.txt

D

.hex

Correct Answer: D

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13.

What are the two instruction set architecture (ISA) classifications?

A

SIDC & BIDC

B

SIDC & RICS

C

CISC & VISC

D

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Correct Answer: B

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14.

What is internal RAM memory of 8051 microprocessor?

A

32 bytes

B

64 bytes

C

128 bytes

D

256 bytes

Correct Answer: C

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15.

How many timers/counter 8051 16-bit microprocessor have?

A

1

B

2

C

5

D

8

Correct Answer: B

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16.

Register that is used to holds the memory address of the next instruction to be executed is

A

Program Memory

B

Program Counter

C

Control Unit

D

Instruction decoder

Correct Answer: B

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17.

The 8051 microprocessor has ________ parallel I/O ports.

A

2

B

3

C

4

D

5

Correct Answer: C

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18.

Which instructions affect the program counter?

A

Call & Return

B

Call & Jump

C

Push & Pop

D

Return & Jump

Correct Answer: B

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19.

Which register is used to store the output generated by ALU?

A

Special Function Register

B

Timer Register

C

Accumulator

D

Stack Pointer

Correct Answer: C

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20.

........... signal control the flow of data

A

DTR

B

RTS

C

Both 1 & 2

D

None of the above

Correct Answer: C

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