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Microprocessor

Microprocessor
How many 16-bit special purpose registers are present in 8085 microprocessor?

 8
 6
 2
 16

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Microprocessor
The maximum number of seven segment displays that can be connected to 8279 is

 8
 18
 16
 12

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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

 11111111
 None
 00000001
 00000000

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Microprocessor
Because we wish to allow each ASCII code to occupy one location in memory, most memories are __________ addressable.

BYTE
WORD (16 bits)
DOUBLEWORD (32 bits)
NIBBLE

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Microprocessor
The operating modes of 8255 A are called

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

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Microprocessor
A sequence of two registers that multiplies the content of DE register pair by two and stores the result in HL register pair (in 8085 assembly language) is

 PCHL & DAD D
 XTHL & DAD H
 XCHG & DAD H
 XCHG & DAD B

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