Electronics and Communication Engineering - Microprocessors

21. 

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: Option C

Explanation:

Digital chips need 5 V supply.


22. 

The interface chip for 8086 and 16 bit ADC is

A. 8259
B. 8255
C. 8253
D. 8251

Answer: Option B

Explanation:

8255 is interface chip for 8086 and ADC.


23. 

Which of the following real variable names is not valid in Fortran?

A. BETA
B. ALPHA
C. A
D. AB * 2

Answer: Option D

Explanation:

Operator is not allowed.


24. 

Temporary register in 8085 is a 16 bit register.

A. True
B. False

Answer: Option B

Explanation:

It is 8 bit-register.


25. 

In which computer language is 'break' statement used

A. Fortran 77
B. Pascal
C. C
D. none of the above

Answer: Option C

Explanation:

Whenever keyword 'break' is encountered inside any C loop control passes to the first statement after the loop.