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Microprocessor

Microprocessor
The ROM programmed during manufacturing process itself is called

 EEPROM
 EPROM
 PROM
 MROM

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Microprocessor
The content of the A15-A8 (higher order address lines) while executing “IN 8-bit port address” instruction are

 all bits set (i.e. FFH)
 same as the content of A7-A0
 all bits reset (i.e. 00H)
 irrelevant

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Microprocessor
Maximum number of I/O that can be addressed by the INTEL 8085 is

 256
 285
 512
 65536

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Microprocessor
‘Burst refresh’ in DRAM is also called

Concentrated refresh
Distributed refresh
Hidden refresh
None of these

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Microprocessor
A 37 bit mantissa has an accuracy of

10 decimal places
11 decimal places
8 decimal places
6 decimal places

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Microprocessor
I)A total of about one million bytes can be directly addressed by the 8086 microprocessor II)8086 has thirteen 16-bit registers III)8086 has eight flags IV)Compared to 8086, the 80286 provides a higher degree of memory protection Which one of the statements given above are correct?

 1,3 &4
 2,3&4
 1,2 & 3
 1,2 & 4

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