Microprocessors - ECE Questions and Answers

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL

Windows can run several tasks simultaneously.

True

False

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL

Assertion (A): 1C 74181 is an ALU in TTL 7400 series.

Reason (R): 1C 74181 can accept two 4 bit words and can perform any one of possible 16 arithmetic or logic operations.

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

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL

The instruction LDA 20 in 8085 means

contents of memory location 20 are fetched into the accumulator

the value 20 is fetched into accumulator

either (a) or (b)

neither (a) nor (b)

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL

Intel 2004 is a

ROM

Volatile RAM

NV RAM

None of the above

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL

The programming language in which Excel records the macro code is

basic

visual basic

video basic

basic 2

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL

The 8085 instruction LDA FFA is an example of

Direct addressing

Immediate addressing

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL

A mP contains 2 MHz crystal. The time taken to complete instructions with 1000 cycles is

2 ms

1 ms

2 nx

1 ns

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL

Consider the following statement in Fortran 77 READ *, (X.(I), I = 0, 4) Which of the following is correct?

3 values would be read and stored in X (0), X (1), X (2)

4 values would be read and stored in X (0), X (1), X (2), X (3)

5 values would be read and stored in X (0), X (1), X (2), (3)(4)

5 values would be read and stored in X (I), X (2), X (3), X (4), X (5)

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL

Which of the following methods does not cause any reduction in instruction length?

Using program counter

Common source and destination address

Implicit source and destination address

Machine language programming