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Microprocessor

Microprocessor
The number of interrupt lines in 8085 is

3
4
2
5

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Microprocessor
The execution of RST n instruction causes the stack pointer to

 increment by two
 decrement by two
None of these
 remain unaffected

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Microprocessor
The 8085 microprocessor enters into bus idle machine cycle whenever

 RST 7.5 is recognized
 INTR interrupt is recognized
None of these
 DAD RP instruction is executed

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Microprocessor
Temporary registers in 8085 are

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

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Microprocessor
Each instruction in an assembly language program has the following fields 1. Label field 2. Mnemonic field 3. Operand field 4. Comment field What are the correct sequence of these fields?

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

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Microprocessor
Identify the non-programmable interfacing device from the following

 8255.
 8257.
 8295.
 8212.

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