Discussion
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- Question
The size of cache memory in most microcomputers is about
Options- A. a few bytes
- B. a few kilobytes
- C. a few megabytes
- D. a few gigabytes
- Correct Answer
- a few kilobytes
ExplanationSize of Cache memory varies from about 16 K bytes to about 256 K bytes.
Microprocessors problems
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JCOKE = 3
JCOKE = JCOKE + 1
GO TO (5, 8, 9, 11, 15, 16 18, 20) JCOKE.
After the execution of above statement, the control is transferred to statement number
Options- A. 8
- B. 11
- C. 16
- D. 20 Discuss
Correct Answer: 11
Explanation:
It is a computed GO TO statement. Since J COKE = 3 + 1 = 4, the control is transferred to statement 11.- 2. Expression ++i is equivalent to
Options- A. i = i + 2
- B. i = i + 1
- C. i = i - 1
- D. i = i + i + i Discuss
Correct Answer: i = i + 1
Explanation:
i is incremented by 1.- 3. When .4546 E 5 and .5433 E 7 are to be added in normalized floating point mode
Options- A. none of the numbers is changed to any other form
- B. .4546 E 5 is changed .004546 E 7 and .5433 E 7 is not changed
- C. .5433 E 7 is changed to 54.33 E 5 and .4546 E 5 is not changed
- D. both the numbers are changed and their exponents are made equal to 6 Discuss
Correct Answer: .4546 E 5 is changed .004546 E 7 and .5433 E 7 is not changed
Explanation:
Exponents are made equal and integer part is made zero.- 4. During processing the instructions, data, intermediate results and final results in a computer are held in
Options- A. CPU
- B. ALU
- C. Primary memory
- D. Secondary memory Discuss
Correct Answer: Primary memory
Explanation:
Primary memory holds these during processing of instructions.- 5. Which of the following is a computer language?
Options- A. MS WORD
- B. Page maker
- C. MS EXCEL
- D. LISP Discuss
Correct Answer: LISP
Explanation:
LISP is a computer language. The remaining are software packages.- 6. Temporary register in 8085 is a 16 bit register.
Options- A. True
- B. False Discuss
Correct Answer: False
Explanation:
It is 8 bit-register.- 7. In which computer language is 'break' statement used
Options- A. Fortran 77
- B. Pascal
- C. C
- D. none of the above Discuss
Correct Answer: C
Explanation:
Whenever keyword 'break' is encountered inside any C loop control passes to the first statement after the loop.- 8. Which of the following is not an integer constant?
Options- A. 0
- B. -8
- C. +1074
- D. -8.1 Discuss
Correct Answer: -8.1
Explanation:
Integer constant should not have decimal point.- 9. Z flag is reset if an ALU operation results in 0.
Options- A. True
- B. False Discuss
Correct Answer: False
Explanation:
Z flag is set if ALU operation results in zero.- 10. Assertion (A): Microprocessor 8085 has on-chip oscillator with inbuilt crystal.
Reason (R): For frequency stability crystal oscillator is preferred.
Options- A. Both A and R are correct and R is correct explanation of A
- B. Both A and R are correct but R is not correct explanation of A
- C. A is correct R is wrong
- D. A is wrong R is correct Discuss
Correct Answer: A is wrong R is correct
Explanation:
Crystal has to be connected externally to pins 1 and 2 of 8085.
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