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Microprocessor

Microprocessor
The word size of 8085 microprocessor is

 8-bit
 4-bit
 20-bit
 16-bit

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Microprocessor
‘Burst refresh’ in DRAM is also called

Hidden refresh
Distributed refresh
Concentrated refresh
None of these

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Microprocessor
Assertion(A): Address bus is unidirectional. Reason(R): Data bus is bidirectional

 Both A & R are true but R is not the correct explanation of A
 A is true but R is false
 Both A & R are true and R is the correct explanation of A
 A is false but R is true

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Microprocessor
The address bus width of a microprocessor which is capable of addressing 64 Kbytes of the memory is

 8
 12
 20
 16

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Microprocessor
Output of the assembler in machine codes is referred to as

 Source program
 Object program
 Macroinstruction
 Symbolic addressing

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Microprocessor
In an intel 8085A, which is the first machine cycle of an instruction?

 A memory write cycle
 An op-code fetch cycle
 A memory read cycle
 An I/O read cycle

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