Microprocessors - Section 1 (3)

Directions to Solve

Microprocessors - Section 1

17.

To evaluate X = (A + B + 1.2) * (A + B - C) the sequence of operation is

A.	+ + + - * =
B.	* + + + - =
C.	+ + - * + =
D.	- + + + * =

Answer: Option A

Explanation:

Parenthesis has first priority.

18.

A 256 x 4 EPROM has

A.	8 address pins and 4 data pins
B.	8 address pins and 8 data pins
C.	4 address pins and 8 data pins
D.	4 address pins and 4 data pins

Answer: Option A

Explanation:

2⁸ = 256

19.

In Java it is possible to have

An array of integers
An array of string objects
An array of arrays
An array on integer and strings

Which of the above are correct?

A.	All
B.	1, 2 and 3 only
C.	1 and 2 only
D.	1, 3 and 4 only

Answer: Option B

Explanation:

An array on integers and strings is not possible.

20.

Which of the following can not be used as a variable name in C?

A.	else
B.	coal
C.	ram
D.	vendy

Answer: Option A

Explanation:

else is not allowed as variable name in C.

21.

Consider the following DO statement in Fortran 77DO 52 N = 1, 10, 3The number of DO loop executions in the above statement is

A.	1
B.	10
C.	3
D.	4

Answer: Option D

Explanation:

Do statement is executed when N = 1, 4, 7, 10, i.e., a total of 4 times.

22.

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.

Which of the above are correct?

A.	All
B.	1, 2, 3 only
C.	1, 2, 4 only
D.	2, 3, 4 only

Answer: Option B

Explanation:

Digit as first character is not allowed.

23.

Consider the following program in PascalX = 2.57 X = (X + 0.06) * 10 I = TRUNC (X) X = I X = X / 10.0The final value of X would be

A.	2
B.	2.6
C.	2.63
D.	26.3

Answer: Option B

Explanation:

(2.57 + 0.06) 10 = 26.3 → 46-290

24.

Assertion (A): Microprocessor 8085 has on-chip oscillator with inbuilt crystal.

Reason (R): For frequency stability crystal oscillator is preferred.

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

Answer: Option D

Explanation:

Crystal has to be connected externally to pins 1 and 2 of 8085.

Microprocessors - Section 1 (3)

Microprocessors - Section 1

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