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Microprocessor

Microprocessor
Of the following circuits, the one which involves storage is

Nand
Mux
Decoder
RS Latch

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

 8279
 8251
 8259
 8253

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Microprocessor
The addressing mode in instruction PUSH B is

 immediate
 register indirect
 direct
 register

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Microprocessor
A microprocessor differentiates between op code, data/address at any time by

 the sequence in which memory contents are fetched by it
 the program counter
 the stack pointer
 its internal registers

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

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

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

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