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Microprocessor

Microprocessor
The clock speed of 8085 is

 1KHz.
 3.2MHz.
 3.2KHz.
 1MHz.

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

 XRI 0FH
 ANI F0H
 ANI OFH
 XRI FOH

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Microprocessor
What are the sets of commands in a program which are not translated into machine instructions during assembly process, called?

 Operands
 Mnemonics
 Directives
 Identifiers

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Microprocessor
DMA is used between

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

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Microprocessor
Using one 8259 IC is equivalent to providing …………. INTR pins on 8085

 18
 16
 12
 8

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Microprocessor
Which one of the following instruction may be used to clear the accumulator content irrespective of its initial value?

 MOV A, 00H
 SUB A
 CLR A
 ORA A

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