A computer mouse is a pointing input device that is used to click icons on a computer. It is connected to the computer by a cable or using wireless technologies. They are categorized as pointing devices because mostly they are used to point to a position on the screen to execute commands. A mouse function…
Computer hardware is the physical tangible part of a computer. They comprise the main part of a computer both internal and external or peripherals. The main characteristic of hardware is it can be seen, felt, and even touch, unlike computer software. The computer hardware is categorized into input, processing, storage, output, and communication devices. Each…
An overhead projector (OHP) is an output device that enlarges and projects images into a bigger surface. The images can be static, like data, graphical, or moving images (video). The projector does this by passing the image to be projected through a lens that enlarges the image. Read more on how projectors work. Types of…
Computers are designed for different purposes and to function in a certain way. This gives the bases of how computers can be grouped together using different factors to classify them. The classification overlaps each other such that a computer can be in more than one category. There are four main classifications of computers where each…
A document scanner is an input device that converts text documents or images into softcopy that can be manipulated into the computer. They scan hardcopy of either text or images to convert them mostly into digital images. They use a light sensor to do the scanning. The main document scanners are hand-held, flat-bed, drum, sheet-fed,…
A computer motherboard is also known as the main circuit board, logic board, or mainboard. It is the main printed circuit board on the computer. It carries most of the computer components like CPU, RAM, BIOS, BUSes, CMOS, chipsets, cache memory, jumper, and many other components. The motherboard’s main function is to house the component…
A computer monitor, also known as a screen, display, or Visual Display Unit (VDU), is an essential output device that displays data processed by your computer. In the modern digital age, the computer monitor serves as our window into the vast world of computing. Far more than just a screen, it’s an essential output device…
A printer is an essential output device that transforms digital information (soft copy) into a tangible format (hard copy). Modern printers connect to computers via USB, Wi-Fi, or Bluetooth, offering seamless integration with devices like laptops, smartphones, and tablets. The printer market offers a variety of types, including laser, inkjet, dot-matrix, drum, and the emerging…
What is a Computer? A computer is an electronic device that processes information. It takes input, processes it, produces output, and can store information for later use. Being electronic means it needs electric power to run and is built from electronic components. Computers come in various forms, classified by their size, functionality, and purpose –…