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Microprocessor

Microprocessor
Pick out the matching pair

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

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Microprocessor
Which one of the following microprocessor has 16-bit data bus?

 8085
 68000
 Z-80
 6502

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Microprocessor
Let the content of register C be 00000000 before the instruction DCR C is executed. The content of register C after the after the execution of this instruction will be

 None
 11111111
 00000001
 00000000

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Microprocessor
The clock speed of 8085 is

 3.2KHz.
 1KHz.
 1MHz.
 3.2MHz.

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Microprocessor
DMA is used between

 microprocessor and I/O
 memory and I/O
 none
 microprocessor and memory

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Microprocessor
After RESET 8255 will be in

 mode 2
 unchanged condition
 mode 0; all ports are input
 mode 0; all ports are output

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