A command line interface is an interface where the user uses text-based commands to communicate with the system. It is also known as a character or console user interface. It was the main way for a user to interact with the computer operating system and application before the use of GUI. Today it is still…
A graphic user interface (GUI) is a visual interface through which a system or device user interacts with the computer. GUI interface is characterized by having small graphical representation images called icons, uses of buttons, window interface, and menus among other features. The graphical representation makes the interface more user-friendly and simple to learn. The…
A Read Only Memory (ROM) is a type of computer memory that is non-volatile. As the name suggests data is written once and read many times on these memories. It is classified as computer primary memory alongside RAM. They are used to store firmware software for devices such as computers, routers, and gaming devices, among…
A computer monitor is an output device that is used to display data that is processed by the computer. It is also known as a screen or video display unit. Computer screens have many features such as size, resolution, and contrast, among many others. For optimum use of a monitor, the user is required to…
A router is a networking components device used to connect two networks that use different protocols. It is mainly used as a gateway to connect the LAN and WAN or internet networks. They are used to direct traffic from source to destination by choosing the best path for the message. Network routers can be wired,…
A bus or linear bus topology is a type of computer network layout where all devices are connected to a single cable called the linear bus. The cable is also called a backbone or trunk. Bus cable is shared by the devices and allows data to flow in both directions. All devices have an equal…
The CPU registers are high-speed access storage areas that are within the processor. They are also known as computer registers. Registers are inbuilt within the processor to increase the speed of access. They are faster than cache and main memory. They are used to temporarily store data that is currently being executed on the CPU….
A ring network topology is a computer network where each computer is connected to other two adjacent devices creating a circular data path. The data in ring topology can either move in one direction in what is called a unidirectional ring or bidirectional. Each device on the ring act as a relay point to pass…
A sound card is a computer expansion card that is fixed on the motherboard to support audio input and output. It is also known as a PC sound card, audio card, or audio interface. It converts digital signals from computers to analog signals to be played on the speakers. Computer sound cards can be internally…
A plotter is an output device that converts softcopy vector graphics data into hardcopy on different print materials. It is a printer that interprets computer commands and prints continuous lines using a pen instead of dots like an ordinary printer. There are different types of plotters such as drum, flatbed, electrostatic, inkjet, and pen among…