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Microprocessor

Microprocessor
The word size of 8085 microprocessor is

 20-bit
 4-bit
 8-bit
 16-bit

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

 A is false but R is true
 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

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Microprocessor
Inintel 8085A microprocessor ALE signal is made high to

 To disable data bus
 To achieve all the functions listed above
 To latch data D0-D7 from data bus
 Enable the data bus to be used as low order address bus

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Microprocessor
The forms of IF statements in FORTRAN 77 are called

Logical IF, block IF and arithmetic IF
Logical IF and arithmetic IF
Logic IF, block IF, arithmetic IF and negate IF
Logical IF and Block IF

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Microprocessor
A number of 1-bit registers used in microprocessors to indicate certain conditions are usually referred to as

 counters
 shift registers
 flags
 latches

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Microprocessor
Consider the following registers: 1. Accumulator and flag register 2. B and C register 3. D and E register 4. H and L register Which of these 8-bit registers of 8085 microprocessor can be paired together to make a 16-bit register?

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

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