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Microprocessor

Microprocessor
The ROM programmed during manufacturing process itself is called

 EPROM
 MROM
 EEPROM
 PROM

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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.

 EI
 RIM
 DI
 SIM

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Microprocessor
Which one of the following ICs is used to interface keyboard and display?

 8253
 8279
 8259
 8251

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Microprocessor
RST0 - RST7 are the __________ in 8085.

 conditional interrupts
 hardware interrupts
 logical interrupts
 software interrupts

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

1000
10000
one million
100000

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Microprocessor
The 8085 microprocessor enters into bus idle machine cycle whenever

 RST 7.5 is recognized
 INTR interrupt is recognized
 DAD RP instruction is executed
None of these

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