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Microprocessor

Microprocessor
In order to save accumulator value on the stack, which of the following instruction may be used

 POP PSW
 PUSH A
 PUSH PSW
 PUSH SP

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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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Microprocessor
DMA is used between

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

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Microprocessor
How many 16-bit special purpose registers are present in 8085 microprocessor?

 2
 8
 16
 6

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Microprocessor
The ROM programmed during manufacturing process itself is called

 EEPROM
 PROM
 MROM
 EPROM

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Microprocessor
How many bytes in a zero memory page should be reserved for vectors used by RST instructions?

 128.
 32.
 16.
 64.

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