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Microprocessor

Microprocessor
The clock speed of 8085 is

 1KHz.
 3.2MHz.
 3.2KHz.
 1MHz.

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Microprocessor
DMA signal/signals in 8085 is/are

 HOLD.
 HLDA.
 READY.
 All.

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Microprocessor
Total numbers of output pins in 8085 microprocessor are

 27
 30
 13
 40

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Microprocessor
While INX B instruction execute,

 only carry and zero flags will be affected
 only carry flag will be affected
 all flags will be affected
 no flags will be affected

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Microprocessor
The cycle required to fetch and execute an instruction in a 8085 microprocessor is which one of the following?

 Memory cycle
 Instruction cycle
 Clock cycle
 Machine cycle

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Microprocessor
Which one of the following ICs is used to interface keyboard and display?

 8259
 8279
 8253
 8251

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