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Microprocessor

Microprocessor
How many T-states are required for execution of OUT 80H instruction?

 10
 7
 13
 16

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Microprocessor
Maximum of how many devices can be connected simultaneously to the microprocessor via 8257 in DMA data transfer mode?

 6
 8
 4
 10

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Microprocessor
When any data transfer instruction, to transfer the data from memory to microprocessor, is executed the condition flags are

 affected indicating specific conditions
 always set
 always reset
 not affected

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Microprocessor
How many segments are there in 8086?

 4.
 6.
 2.
 3.

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Microprocessor
Total number of instructions in 8085 microprocessor assembly language is

 247
 246
 244
 245

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Microprocessor
After RESET 8255 will be in

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

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