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Microprocessor

Microprocessor
In 8085 microprocessor, the RST6 instruction transfer programme execution to following location

 0024H.
 0060H.
 0048H.
 0030H.

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Microprocessor
In a microcomputer , the address of memory locations are binary numbers that identify each memory circuit where a byte is stored. If a microcomputer uses 20-bit address, then numbers of different memory locations are

 220 - 1
 220
 20
 220-1

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Microprocessor
What is mean by ALU

 Arithmetic logic unsigned
 Arithmetic local unsigned
 Arithmetic logic unit
 Arithmetic logic upgrade

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Microprocessor
Consider the following statements: Arithmetic Logic Unit (ALU) 1.Performs arithmetic operations 2.Performs comparisons. 3.Communicates with I/O devices 4.Keeps watch on the system Which of these statements are correct?

 1, 2 and 3
 3 and 4 only
 1, 2, 3 and 4
 1 and 2 only

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Microprocessor
The microprocessor issues ALE during first T-state of

 memory WRITE cycle only
 every machine cycle
 fetch cycle only
 memory READ cycle only

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Microprocessor
The five flags in 8085 are designated as

Z, CY, S, P and AC
D, Z, S, P, AC
Z, C, S, P, AC
Z, CY, S, D, AC

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