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Microprocessor

Microprocessor
In 8086 the number of bytes which can be addressed directly is about

1000
10000
100000
one million

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Microprocessor
What is used to access 16-bit data in 8086?

 Data Banking.
 Memory Banking.
None of these
 Pipeline architecture.

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Microprocessor
In an 8085 microprocessor based system, the contents of SP are 1000H, PUSH B instruction will transfer the contents of registers B & C respectively for memory locations

 0FFE H and 0FFF H
 1000 H and 0FFF H
 0FFF H and 0FFE H
 1000 H and 1001 H

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Microprocessor
The operating modes of 8255 A are called

Mode 0 and mode 1
Mode 0, mode 2 and mode 3
Mode 0, mode 1 and mode 2
Mode 0 and mode 2

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Microprocessor
SUB A instruction in 8085

 sets zero and sign flags
 sets zero and carry flags
 reset zero and parity flags
 reset carry and sign flags

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Microprocessor
Consider the following statements: In 8085 microprocessor, data-bus and address bus are multiplexed in order to I)Increase the speed of microprocessor. II)Reduce the number of pins. III)Connect more peripheral chips. Which of these statements is/are correct?

 (II) only
 (II) & (III)
 (I) only
 (I), (II) & (III)

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