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Microprocessor

Microprocessor
A combinational PLD with a fixed AND array and a programmable OR array is called a

 PLD
 PAL
 PLA
 PROM

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

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Microprocessor
The clock speed of 8085 is

 1KHz.
 1MHz.
 3.2KHz.
 3.2MHz.

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Microprocessor
We say that a set of gates is logically complete if we can build any circuit without using any other kind of gates. Which of the following sets are logically complete

Set of {EXOR, NOT}
Set of {AND,OR,NOT}
Set of {AND,OR}
None of these

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Microprocessor
‘Burst refresh’ in DRAM is also called

None of these
Distributed refresh
Hidden refresh
Concentrated refresh

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Microprocessor
SUB A instruction in 8085

 reset zero and parity flags
 reset carry and sign flags
 sets zero and sign flags
 sets zero and carry flags

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