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Digital Electronics MCQ Question with Answer

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

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

one-time programmable
a CMOS device
reprogrammable
reprogrammable and a CMOS device
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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.
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Question No : 5
The systematic reduction of logic circuits is accomplished by:

symbolic reduction
using Boolean algebra
using a truth table
TTL logic
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Question No : 6
When was the first 8-bit microprocessor introduced?

1969
1974
1979
1985
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Question No : 7
Which bus is a bidirectional bus?

address bus
data bus
address bus and data bus
none of the above
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