Exercise: Microprocessors

Questions for: Microprocessors

The interface chip for 8086 and 16 bit ADC is
A:
8259
B:
8255
C:
8253
D:
8251
Answer: B

8255 is interface chip for 8086 and ADC.

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Most of the memory chips in static RAM
A:
do not require any supply
B:
need 2 V supply
C:
need 5 V supply
D:
need 12 V supply
Answer: C

Digital chips need 5 V supply.

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The number of storage classes in C is
A:
2
B:
3
C:
4
D:
6
Answer: C

C has four storage classes viz. automatic storage class, register storage class, static storage class and external storage class.

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In a computer the instructions, data, intermediate and final results during processing are held in ALU.
A:
True
B:
False
C:
D:
Answer: B

These are not held in ALU. Only computations are done by ALU.

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Which of the following is not a valid real constant in C?
A:
1.2 e 2.0
B:
-2.3 e - 2
C:
-2.3 E 2
D:
-2.3 e 2
Answer: C

In C real constant expressed in exponential form, mantissia and exponent should be separated by e (and not E).

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