Digital Electronics MCQ Question with Answer

Digital Electronics MCQ with detailed explanation for interview, entrance and competitive exams. Explanation are given for understanding.

Question No : 1
Which of the following expressions is in the sum-of-products (SOP) form?

AB + CD

AB(CD)

(A + B)(C + D)

(A)B(CD)

Question No : 2
In the decimal numbering system, what is the MSD?

The digit to the right of the decimal point

The middle digit of a stream of numbers

The last digit on the right

The digit with the most weight

Question No : 3
The generic array logic (GAL) device is ________.

one-time programmable

a CMOS device

reprogrammable

reprogrammable and a CMOS device

Question No : 4
Which of the following statements does NOT describe an advantage of digital technology?

Information storage is easy.

The circuits are less affected by noise.

The operation can be programmed.

The values may vary over a continuous range.

Question No : 5
The systematic reduction of logic circuits is accomplished by:

symbolic reduction

using Boolean algebra

using a truth table

TTL logic

Question No : 6
When was the first 8-bit microprocessor introduced?

1969

1974

1979

1985

Question No : 7
Which bus is a bidirectional bus?

address bus

data bus

address bus and data bus

none of the above