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Microprocessor

Microprocessor
Pick out the matching pair

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

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

 decrement by two
None of these
 remain unaffected
 increment by two

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Microprocessor
An 8-bit microprocessor signifies that

 8-bit address bus
 8-bit controller
 8-bit data bus
 8-interrupt lines

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Microprocessor
The first machine cycle of an instruction is always

 A memory read cycle
 An I/O read cycle
 A fetch cycle
 A memory write cycle

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Microprocessor
Identify the communication interfacing device from the following

 8155
 8257
 8251
 8255

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Microprocessor
The number of hardware interrupts present in 8085 microprocessor are

 10
 16
 8
 5

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