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Microprocessor

Microprocessor
A 37 bit mantissa has an accuracy of

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

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Microprocessor
DMA is used between

 memory and I/O
 microprocessor and memory
 microprocessor and I/O
 none

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Microprocessor
Which one of the following instruction may be used to clear the accumulator content irrespective of its initial value?

 SUB A
 MOV A, 00H
 ORA A
 CLR A

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Microprocessor
The character set of Fortran 77 includes lower case alphabets a to z.

False
True

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Microprocessor
Identify the programmable interval timer from the following

 8279
 8253
 8252
 8275

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Microprocessor
Which one of the following interrupt/interrupts is/are only level triggering?

 TRAP
 RST 5.5
 RST 6.5
 both ‘a’ and ‘b’

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