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Microprocessor

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

 PROM
 PLD
 PLA
 PAL

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Microprocessor
The number of interrupt lines in 8085 is

5
2
4
3

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

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

 Stack Pointer
 B-C
 PSW
 D-E

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

True
False

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