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Home ‣ Electronics and Communication Engineering ‣ Microprocessors Comments
- Question
8085 has 6 sign flags.
Options- A. True
- B. False
- Correct Answer
- False
ExplanationIt has one sign flag S.
Microprocessors problems
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- 1. 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.- 2. 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.- 3. 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 Discuss
Correct Answer: 1, 2, 3 only
Explanation:
Digit as first character is not allowed.- 4. 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.- 5. 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.- 6. 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.- 7. 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.- 8. Match the following:
List I (Logic family) List II (Characteristic of logic family) A. TTL 1. Maximum power Consumption B. ECL 2. Highest Packing Density C. NMOS 3. Least Power Consumption D. CMOS 4. Saturated Logic
Options- A. A-1, B-4, C-2, D-3
- B. A-1, B-4, C-3, D-2
- C. A-4, B-1, C-2, D-3
- D. A-4, B-1, C-3, D-2 Discuss
Correct Answer: A-4, B-1, C-2, D-3
- 9. Match the following:
List I f(t) List II F(s) A. t 1. 
B. eat 2. 
C. u(t) 3. 
D. cos ?t 4. 
Options- A. A-1, B-3, C-2, D-4
- B. A-1, B-4, C-2, D-3
- C. A-2, B-4, C-1, D-3
- D. A-4, B-3, C-1, D-2 Discuss
Correct Answer: A-4, B-3, C-1, D-2
- 10. Match the following:
List I List II A. p type semiconductor 1. silicon B. n type semiconductor 2. holes are majority carriers C. Intrinsic semiconductor 3. electrons are majority carriers D. Tungsten 4. is a metal
Options- A. A-2, B-3, C-1, D-4
- B. A-1, B-2, C-3, D-4
- C. A-4, B-3, C-2, D-1
- D. A-3, B-1, C-2, D-4 Discuss
Correct Answer: A-2, B-3, C-1, D-4
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