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Microprocessor

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

 10
 7
 16
 13

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Microprocessor
Identify the communication interfacing device from the following

 8251
 8155
 8255
 8257

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Microprocessor
Which of the data transfer is not possible in microprocessor

 memory to memory
 I/O device to accumulator
 accumulator to memory
 memory to accumulator

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Microprocessor
Using one 8259 IC is equivalent to providing …………. INTR pins on 8085

 12
 16
 8
 18

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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?

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

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Microprocessor
The number of status flags present in 8085 microprocessor are

 16
 5
 8
 10

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