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Electronics and Communication Engineering - Microprocessors

Exercise : Microprocessors - Section 3
41.
Which of the following is operating system?
MS WORD
Ventura
Java
Windows
Answer: Option
Explanation:

Windows is an operating system.

42.
A modem is connected to PC at
serial port
parallel port
SCSI port
input port
Answer: Option
Explanation:

Modem is connected at serial port.

43.

Assertion (A): The data bus and address bus of 8085 are multiplexed.

Reason (R): Multiplexing reduces the number of pins.

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:

In 8085 signal lines AD7 - AD0 are used for address bits in some T states and for data in some other T states.

44.
Consider the following statements about 'Functions' in C
  1. A function can be called any number of times.
  2. A function gets called when the function name is followed by a semicolon.
  3. The order in which functions are defined in a program and the order in which they are called must be the same.
Which of the above statements are correct?
All
1 and 2 only
1 and 3 only
2 and 3 only
Answer: Option
Explanation:

The two orders need not be the same in C.

45.
A failure rate of 0.01 percent in 1000 hours in a memory corresponds to an MTBF of
1000 hours
100000 hours
10 hours
100 hours
Answer: Option
Explanation:

.

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