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Electronics and Communication Engineering - Microprocessors

Exercise : Microprocessors - Section 7
46.
Consider the following rules in Fortran
  1. A signed or unsigned real variable name or a real constant is a real expression.
  2. Two real expressions connected by an arithmetic operator is a real expression.
  3. A real variable or constant exponential by an integer constant or integer variable is not valid
Which of the above are correct?
All
1 and 2 only
1 and 3 only
2 and 3 only
Answer: Option
Explanation:
No answer description is available. Let's discuss.
47.
Machine cycle is always the same as instruction cycle.
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.
48.
Which of the following is true?
During addition if the carry into and carry out of the sign bit do not match then an overflow has occurred
During addition if the carry into and carry out of the sign bit don't match then an overflow or underflow has occurred
During addition if the carry into and carry out of the sign bit match then an overflow or underflow has occurred
During addition if the carry into and carry out of the sign bit match then an overflow has occurred
Answer: Option
Explanation:
No answer description is available. Let's discuss.
49.
Which addressing mode is suitable only for these instructions in which there is only one operand?
Implicit
Register
Direct
Immediate
Answer: Option
Explanation:
No answer description is available. Let's discuss.
50.

Assertion (A): Microprocesspr 8085 has six 8 bit registers B, C, D, E, H L.

Reason (R): B - C, D - E, H - L may be combined to form register pairs to hold 16 bits data.

Both A and R are correct and R is correct explanation of A
Both A and R are correct but R is not correct explanation of A
A is correct R is wrong
A is wrong R is correct
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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