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Microprocessor

Microprocessor
The clock speed of 8085 is

 1KHz.
 3.2MHz.
 1MHz.
 3.2KHz.

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Microprocessor
The data bus of any microprocessor is always

 Bi-directional
 None
 Either unidirectional or bi-directional
 Unidirectional

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Microprocessor
In one’s complement 8 bit representation 11111111 represents

1
+0
-1
-0

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Microprocessor
Which of the following instruction is not possible in 8085?

 POP B
 POP PSW
 POP 30 H
 POP D

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Microprocessor
The first machine cycle of an instruction is always

 A memory read cycle
 A memory write cycle
 A fetch cycle
 An I/O read cycle

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Microprocessor
DMA signal/signals in 8085 is/are

 HOLD.
 HLDA.
 READY.
 All.

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