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Q.

What is true about microcontroller?

A

A microcontroller is a small and low-cost microcomputer

B

It is designed to perform the specific tasks of embedded systems

C

microcontroller consists of the processor, the memory, Serial ports, peripherals.

D

All of the above

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MCQ

1.

In 8086 microprocessor , the address bus is ________ bit wide

A

10 bit

B

20 bit

C

16 bit

D

12 bit

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2.

........... is the required baud rate for an efficient operation of serial port devices in 8051 microcontroller?

A

1200

B

4800

C

9600

D

2400

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3.

What kind of instructions usually affect the program counter?

A

Push & Pop

B

Call & Jump

C

Call & Return

D

Return & Jump

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4.

Which of the following is the bit addressing range of addressable individual bits over the on-chip RAM?

A

00H to 7FH

B

01H to 7FH

C

00H to FFH

D

&0H to FFH

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5.

When pins are configured as an output (i.e. logic 0), then the single port pins can receive a current of?

A

5mA

B

8mA

C

15mA

D

10mA

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