Computer | MCQs

Explanation

DMA Stands for "Direct Memory Access."

DMA is a method of transferring data from the computer's RAM to another part of the computer without processing it using the CPU.

Explanation

Frequently used shortcuts

Copy the selected content to the Clipboard. Ctrl+C

Paste the contents of the Clipboard.                 Ctrl+V

Select all document content.                                 Ctrl+A

Apply bold formatting to text.                                 Ctrl+B

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ND27-12-2022

Explanation

Explanation

A function the key is one of the "F" keys along the top of a computer keyboard.

On some keyboards, these range from F1 to F12, while others have function keys ranging from F1 to F9.

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RY 16-01-2023

Explanation

The computer that processes both analog and digital signal is called hybrid computer.

Hybrid computers are computers that exhibit features of analog computers and digital computers.

The digital component normally serves as the controller and provides logical and numerical operations,

while the analog component often serves as a solver of differential equations and other mathematically complex problems.

Explanation

Derived from: computare

Means: “to calculate”, “to count”, “to sum up” or “to think together”. 

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Explanation

Explanation

 A computer system consists of a computer case, a power supply unit, a motherboard, a central processing unit, main memory, and a hard disk drive.

Input devices include a keyboard, mouse, microphone, video camera, and image scanner.

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Explanation

An integrated circuit is a set of electronic circuits on one small flat piece  of semiconductor material, usually silicon.

Large numbers of tiny MOSFETs  integrate into a small chip. 

First generation (1940 - 1956)  vacuum tubes as a major piece of technology.

 The ENIAC is  example of 1st generation computer.

Second generation (1956 - 1963) use of transistors.

Third generation (1964 - 1971)  use of Integrated circuits.

Fourth generation (1972 - 2010) use of the microprocessor

Fifth generation (2010 to present) use Artificial intelligence

Explanation

• A barcode reader, also called a price scanner or point-of-sale (POS) scanner.
• It is a hand-held or stationary input device.
• It used to capture and read information contained in a barcode.