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Microprocessor

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

RS Latch
Nand
Mux
Decoder

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Microprocessor
During the execution of the instruction, the ________tests the status and control flags and updates them based on the results of executing the instruction.

 None of these
 Execution Unit (EU)
 Bus Interface Unit (BIU)
 Both ‘c’ and ‘d’

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Microprocessor
Which of the data transfer is not possible in microprocessor

 memory to memory
 memory to accumulator
 I/O device to accumulator
 accumulator to memory

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Microprocessor
The reason for the presence of ALE pin in 8085, but not in 6800 is that

 8085 has 5 interrupts lines, whereas 6800 has only two
 None
 8085 has multiplexed bus, whereas 6800 does not have
 8085 uses I/O mapped I/O, whereas 6800 uses memory mapped I/O

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Microprocessor
Identify the programmable interval timer from the following

 8279
 8253
 8252
 8275

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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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