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Q.

Among the four groups of register banks, the number of groups that can be accessed at a time is

A

1

B

2

C

3

D

all the four

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1.

The register that is used for accessing external data memory is

A

DPH

B

DPL

C

DPTR

D

NONE

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2.

In idle mode, the device that is disabled is

A

serial port

B

timer block

C

clock to CPU

D

all of the mentioned

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3.

In idle mode, the device that is disabled is

A

serial port

B

timer block

C

clock to CPU

D

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4.

The only way to terminate the power down mode is to

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CLEAR

B

RESET

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HLT

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5.

Which of the following is an 8-bit register?

A

PSW(Program Status Word)

B

TCON(Timer Control Register)

C

Accumulator

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