Electronics and Communication Engineering - Microprocessors

11. 

Which one is true for writing array variable in Pascal?

A. The general form of an array variable is an integer or a real variable name followed by subscripts enclosed within square brackets. The subscripts are separated by commas
B. The general form of an array variable must be an integer name followed by subscripts enclosed within square brackets. The subscripts are separated by commas
C. The subscripts in array variable must be separated by dots
D. The subscripts must be enclosed within parenthesis

Answer: Option A

Explanation:

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12. 

In 8085, which of the following is an 8 bit register?

A. A
B. SP
C. PC
D. both (a) and (b)

Answer: Option A

Explanation:

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13. 

What does the instruction 'PCHL' in 8085 do?

A. Load the program counter with contents of register pair H L
B. Double the contents of register pair H L
C. Shift the contents of register pair H L by one bit to the right
D. Shift the contents of register pair H L by one bit to left

Answer: Option A

Explanation:

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14. 

In a multi-processor configuration two coprocessors are connected to host 8086 processor. The instruction sets of the two coprocessors

A. must be same
B. may overlap
C. must be disjoint
D. must be the same as that of host

Answer: Option D

Explanation:

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15. 

Virus is a

A. computer hardware problem
B. an operating system
C. a computer program
D. a computer language

Answer: Option C

Explanation:

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