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Microprocessor

Microprocessor
In order to complement the lower nibble of accumulator one can use

 CMA
 XRI 0FH
 ORI 0FH
 ANI 0FH

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Microprocessor
A bus connected between the CPU and main memory that permits transfer of information between main memory and the CPU is known as

 DMA bus
 Address bus
 Control bus
 Memory bus

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Microprocessor
Pick up the programmable interrupt controller from the following

 8279
 8259
 8275
 8257

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

 XRA R
 DCX Rp
 ORA R
 DCR R

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Microprocessor
The register which holds the information about the nature of results of arithmetic and logic operations is called as

 Process status register
 Accumulator
 Flag register
 Condition code register

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Microprocessor
Pick out the matching pair

 READY; RIM
 HOLD; DMA
 SID; SIM
 S0;S1;wait status

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