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Microprocessor

Microprocessor
8085 microprocessor has how many pins

  30.
  40.
 39.
 41.

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Microprocessor
A combinational PLD with a fixed AND array and a programmable OR array is called a

 PROM
 PLD
 PAL
 PLA

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

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

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Microprocessor
The 8085 microprocessor uses a crystal of frequency 6.25 Mhz. The T-state value is

 1280ns
 320ns
 960ns
 640ns

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Microprocessor
In a computer the data transfer between hard disk and CPU is nearly the same as that between diskette and CPU.

True
False

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Microprocessor
Identify the non-programmable interfacing device from the following

 8212.
 8257.
 8295.
 8255.

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