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Microprocessor

Microprocessor
The number of output pins in 8085 microprocessors are

 21.
 19.
 40.
 27.

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Microprocessor
An 8-bit microprocessor can have ………….. address lines.

 16
 32
 cannot be predicted
 8

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Microprocessor
The program counter in a 8085 micro-processor is a 16-bit register, because

 It has to fetch two 8-bit data at a time
 It counts 16-bits at a time
 There are 16 address lines
 It facilitates the user storing 16-bit data temporarily

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Microprocessor
A bus connected between the CPU and main memory that permits transfer of information between main memory and the CPU is known as

 Control bus
 Address bus
 DMA bus
 Memory bus

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Microprocessor
DMA is used between

 microprocessor and memory
 memory and I/O
 microprocessor and I/O
 none

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Microprocessor
A single instruction to clear the lower nibble of accumulator in 8085 language assembly is

 ANI OFH
 XRI 0FH
 XRI FOH
 ANI F0H

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