The operation of a digital computer is based on _____ principle.

Solution (By Examveda Team)

A digital computer is a type of computing device that processes information using discrete values, most commonly binary digits (0 and 1).

The fundamental working principle of digital computers is based on the concept of counting, where operations are performed using a finite set of values. These values are handled using binary number systems and logic circuits that recognize distinct signal levels.

Each signal represents either a 0 or 1, and the computer counts or processes these signals to perform operations. This is why we say digital computers operate on the counting principle.

Now, let’s examine the incorrect options:

Option B: measuring

Measuring is associated with analog computers, not digital. Analog computers work on continuous signals and are used to measure physical quantities like voltage, temperature, and speed. Digital computers, on the other hand, use discrete values, so measuring is not the correct principle.

Option C: electronic

While digital computers are indeed electronic devices, this option refers to the technology used, not the principle of operation. Saying "electronic" is like describing the medium rather than the logic or function of the system. It doesn't explain how the computer operates logically or mathematically.

Option D: logical

Digital computers perform logical operations using logic gates, but these operations are built upon the binary counting system. While logic is a key component of computer functioning, it is not the core principle. Logic is a method or process, whereas counting is the foundational principle that allows those logical operations to occur.

Option E: None of the above

This is incorrect because Option A is valid. Therefore, choosing “None of the above” is not applicable.

Final Conclusion:

The operation of a digital computer is fundamentally based on the counting principle, as it processes data in discrete steps using binary values. While logic and electronics are involved in the functioning, the foundational concept is based on counting.

Hence, the correct answer is counting.