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Microprocessor

Microprocessor
The five flags in 8085 are designated as

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

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Microprocessor
If the number of address bits in a memory is reduced by 2 and the addressability is doubled, the size of the memory (i.e., the number of bits stored in the memory)

Remains unchanged
Increases by 2^(address bits)/addressability
Halves
Doubles

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Microprocessor
Which one of the following statement is false?

 A microprocessor has bi-directional data bus
 A microprocessor has unidirectional address bus
 A microprocessor has bi-directional address bus
 A microprocessor has an ALU

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Microprocessor
Which of the following instruction will never affect the zero flag?

 ORA R
 XRA R
 DCX Rp
 DCR R

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Microprocessor
Which of the following is not a general purpose peripheral?

I/O port
Programmable interrupt controller
Programmable CRT controller
Programmable interval timer

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Microprocessor
The number of hardware interrupts present in 8085 microprocessor are

 8
 16
 5
 10

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