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…
The computer monitor is an output device that is used to display (softcopy) data that is processed on the system unit. A computer monitor is also known as a screen or Visual Display Unit(VDU). Some types of computer monitors are CRT, LCD, TFT, Plasma, OLED, LED, touch screen, and curved screens. To acquire a new…
Most of the end-users don`t interact with the system software directly because some of them are automated or require advanced knowledge to operate. System software is used to manage the computer system by ensuring it operates optimally. They manage hardware, software, and user needs. They include operating systems, utilities, drivers, middleware, firmware shell, and language…
After acquiring a computer program (system) you are required to change from the old system to the newly acquired system in a process called system changeover. It involves replacing the old system and business processes with a new one. The main system changeover methods are parallel, direct, pilot, and phased changeovers. They are implemented differently…
A printer is an output device that is used to convert soft copy information to hard copy. Most of today`s printers are connected to the system unit by a USB and even others are wireless. The earlier computer though used a different interface to connect. Types of printers currently in the market include laser, inkjet,…
Computer software is a set of instructions that guide a computer on what to do and how to do it. They are programs which means they program computers by giving instructions to the device. Software interface computer hardware with the user. So the software is a step-by-step procedure (algorithm) of how things should happen in…
A computer is defined as an electronic device that allows the input, process, output, and store of information for later use. It is an electronic device because it will require electric power for it to operate and it is made up of electronic components. There are different classifications of computers depending on factors such as…