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Microprocessor

Microprocessor
Pick out the matching pair

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

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

None of these
 increment by two
 decrement by two
 remain unaffected

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Microprocessor
Let the content of accumulator and register B be 0000 0100 and 0100 0000 respectively before execution of instruction SUB B. The content of accumulator after the execution of this instruction will be

 00000100
 01000000
 11000100
 010001000

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Microprocessor
The data lines of 8085 microprocessor are multiplexed with

 status lines
None of these
 lower order address lines
 higher order address lines

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Microprocessor
Identify the programmable DMA controller from the following

 8279
 8253
 8251
 8257

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Microprocessor
The program counter in a 8085 micro-processor is a 16-bit register, because

 It counts 16-bits at a time
 It facilitates the user storing 16-bit data temporarily
 It has to fetch two 8-bit data at a time
 There are 16 address lines

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