Computer Knowledge Questions on Hardware | Set – 47

Correct Answer: A. Mouse

Explanation- Point and draw Devices – A pointing device is an input interface that allows a user to input spatial (i.e., continuous and multi-dimensional) data to a computer. Movements of the pointing device are echoed on the screen by movements of the pointer (or cursor) and other visual changes.

Correct Answer – A. Peripherals

Explanation-A peripheral or peripheral device is ancillary device used to put information into and get information out of the computer. All the input and output devices are termed as peripheral devices.

Correct Answer – C. Photosensitive

Correct Answer – D. Java

Explanation- Java is a general-purpose programming language that is class-based, object-oriented, and designed to have as few implementation dependencies as possible.

Correct Answer – B. I/O ports

Explanation- The transfer of the data from a CPU to peripheral devices of a computer is achieved through Computer ports (also called I/O ports).

Correct Answer: D. Circuit Board

Explanation- Circuit Board also called Printed Circuit Board (PCB), a thin plate on which chips and other electronic components are placed. Computers consist of one or more boards, often called cards or adapters.

Correct Answer – C. Scanner

Explanation- A scanner is a device that optically scans images, printed text, handwriting or an object and converts it to a digital image.

Correct Answer – C. scroll wheel

Explanation-A scroll wheel (or mouse wheel) is a hard plastic or rubbery disc (the “wheel”) on a computer mouse that is perpendicular to the mouse surface. It is normally located between the left and right mouse buttons.

Correct Answer – C. UPCs

Explanation- UPC code, are generally linear black and white spaces of varying widths. They will have close to 12 characters.

Correct Answer: C. diagonally

Explanation- To measure the display size of your screen, whether on phone, laptop, or desktop monitor, simply take the size from one corner of the screen to the opposite diagonal corner.