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Microprocessor

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

 PUSH SP
 POP PSW
 PUSH PSW
 PUSH A

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Microprocessor
Identify the programmable interval timer from the following

 8252
 8253
 8279
 8275

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Microprocessor
During which T-state, contents of OP code from memory are loaded into IR (Instruction Register)?

 T4 OP code fetch
 T2 OP code fetch
 T3 OP code fetch
 T1 OP code fetch

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Microprocessor
The frequency of the driving network connected between pins 1 and 2 of 8085 microprocessor is

None of these
 equal to the desired frequency
 twice the desired frequency
 four times the desired frequency

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Microprocessor
Both the ALU and control section of CPU employ which special purpose storage location?

 Accumulators
 Registers
 Buffers
 Decoders

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Microprocessor
The multiplexing of address bus and data buses is used in

 none of these.
 never multiplexed.
 depends on the internal architecture.
 all the microprocessors.

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