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- Question
Consider the following
- The first letter of a Java variable is lower case.
- Each successive word in Java variable begins with a capital letter.
- All other letters are lower case.
- A Java variable can have a digit as first character.
Options- A. All
- B. 1, 2, 3 only
- C. 1, 2, 4 only
- D. 2, 3, 4 only
- Correct Answer
- 1, 2, 3 only
ExplanationDigit as first character is not allowed.
Microprocessors problems
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- 1. Which of the following DO statements is invalid in FORTRAN 77?
Options- A. DO 161 = 1, 15
- B. DO 16 1 = 1, 10, 1
- C. DO 16 I = - 5, 5, 2
- D. none of the above Discuss
Correct Answer: none of the above
Explanation:
All are valid.- 2. In a microprocessor
Options- A. all instructions need only one machine cycle
- B. some instructions need only one machine cycle while some other instructions need more than one machine cycle
- C. all instructions need only fraction of one machine cycle
- D. some instructions need less than one machine cycle Discuss
Correct Answer: some instructions need only one machine cycle while some other instructions need more than one machine cycle
Explanation:
Some instructrions do need more than one machine cycle.- 3. To evaluate X = (A + B + 1.2) * (A + B - C) the sequence of operation is
Options- A. + + + - * =
- B. * + + + - =
- C. + + - * + =
- D. - + + + * = Discuss
Correct Answer: + + + - * =
Explanation:
Parenthesis has first priority.- 4. Which of the following is not a valid variable name in C?
Options- A. p o, t
- B. p o t
- C. po_t
- D. p_ot Discuss
Correct Answer: p o, t
Explanation:
Comma is not allowed.- 5. Consider the following DO statement in Fortran 77
DO 52 N = 1, 10, 3
The number of DO loop executions in the above statement is
Options- A. 1
- B. 10
- C. 3
- D. 4 Discuss
Correct Answer: 4
Explanation:
Do statement is executed when N = 1, 4, 7, 10, i.e., a total of 4 times.- 6. Most of the memory chips in static RAM
Options- A. do not require any supply
- B. need 2 V supply
- C. need 5 V supply
- D. need 12 V supply Discuss
Correct Answer: need 5 V supply
Explanation:
Digital chips need 5 V supply.- 7. The power requirements of a DRAM in active and stand by modes is about
Options- A. 350 mW and 5 mW respectively
- B. 350 mW each
- C. 5 mW each
- D. 350 mW and 100 mW respectively Discuss
Correct Answer: 350 mW and 5 mW respectively
Explanation:
Power requirement in stand by mode is very low 1000.- 8. 8085 has 6 sign flags.
Options- A. True
- B. False Discuss
Correct Answer: False
Explanation:
It has one sign flag S.- 9. The interface chip for 8086 and 16 bit ADC is
Options- A. 8259
- B. 8255
- C. 8253
- D. 8251 Discuss
Correct Answer: 8255
Explanation:
8255 is interface chip for 8086 and ADC.- 10. Which is not a valid Java variable
Options- A. lot
- B. c 1t
- C. s $ 2
- D. 2 s $ Discuss
Correct Answer: 2 s $
Explanation:
The first letter of variable name should be lower case.
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