Microcontroller and Embedded System

What is true about microprocessor?

• Microprocessor is a controlling unit of a micro-computer

• It is fabricated on a small chip capable of performing ALU (Arithmetic Logical Unit) operations

• It also communicate with the other devices connected to it.

• All of the above

The __________ controls the flow of data and instructions within the computer.

• control unit

• register array

• accumulator

• ALU

Which determines the number of operations per second?

• Bandwidth

• Word Length

• Clock Speed

• Operations Speed

To select Register Bank 1, RS1-RS0 Should be

• 0 0

• 0 1

• 1 0

• 1 1

Program Counter in 8051 is

• 8 bit wide

• 16 bit wide

• 20 bit wide

Name the following image

• Program Status Work (PSW)

• Program Status Word (PSW)

• Program Serial Word (PSW)

• Peripheral Status Word (PSW)

How many SFR registers are present in memory

• 10

• 12

• 11

• 21

what is PROGRAM COUNTER (PC)?

• holds the address of memory,where next executable instruction placed

• holds the data of memory

• 16- bit register

• it is a memory pointer

which port is used only for INPUT/OUTPUT operation?

• PORT 0

• PORT 1

• PORT 2

• PORT 3

Which of the following comes under the indexed addressing mode?

• MOVX A, @DPTR

• MOVC @A+DPTR,A

• MOV A,R0

• MOV @R0,A