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Microprocessor

Microprocessor
How many 16-bit special purpose registers are present in 8085 microprocessor?

 6
 2
 8
 16

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Microprocessor
The program counter in a 8085 micro-processor is a 16-bit register, because

 It counts 16-bits at a time
 It facilitates the user storing 16-bit data temporarily
 There are 16 address lines
 It has to fetch two 8-bit data at a time

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Microprocessor
The cycle required to fetch and execute an instruction in a 8085 microprocessor is which one of the following?

 Clock cycle
 Instruction cycle
 Machine cycle
 Memory cycle

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

 PAL
 PLD
 PLA
 PROM

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Microprocessor
The stack pointer

 resides in microprocessor
 resides in RAM
 resides in ROM
 may be in RAM or ROM

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Microprocessor
The five flags in 8085 are designated as

D, Z, S, P, AC
Z, CY, S, D, AC
Z, CY, S, P and AC
Z, C, S, P, AC

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