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Microprocessor

Microprocessor
SPHL instruction copies the content of H-L register pair to the _________.

 D-E
 B-C
 Stack Pointer
 PSW

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Microprocessor
In microprocessor based system DMA refers to

None of these
 direct memory access for the user
 direct memory access for the I/O device
 direct memory access for microprocessor

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Microprocessor
Temporary registers in 8085 are

 H and L.
 D and E.
 B and C.
 W and Z.

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Microprocessor
________used to implement the hardware interrupts (RST 7.5, RST 6.5, RST 5.5) by setting various bits to form masks or generate output data via the Serial Output Data (SOD) line.

 DI
 RIM
 SIM
 EI

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Microprocessor
At the beginning of a fetch cycle, the contents of the program counter are

 transferred to address bus.
 transferred to memory data register.
 transferred to memory address register .
 incremented by one.

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Microprocessor
An e-mail message can be sent to many recipients.

False
True

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