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Microprocessor

Microprocessor
A structure that stores a number of bits taken “together as a unit” is a

Decoder
Mux
Register
Gate

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Microprocessor
Inintel 8085A microprocessor ALE signal is made high to

 To achieve all the functions listed above
 Enable the data bus to be used as low order address bus
 To disable data bus
 To latch data D0-D7 from data bus

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

 8085
 68000
 6502
 Z-80

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Microprocessor
_____________is used to read the status of the hardware interrupts (RST 7.5, RST 6.5, RST 5.5) by loading into the A register a byte which defines the condition of the mask bits for the interrupts.

 SIM
 DI
 RIM
 EI

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Microprocessor
SUB A instruction in 8085

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

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Microprocessor
Which one of the following microprocessor is not an 8-bit microprocessor

 6502
 68000
 Z-80
 8085

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