The earliest digital electronic device that could be depicted as the first modern computer is the Colossus. The Colossus was devised to decrypt a German encryption machine used to endow military communications during World War II. The device used 2,400 vacuum tubes to conduct numerous boolean logical operations to decode encrypted data.
Modern computers come in all shapes and sizes to accomplish a broad range of different operations. Although the first ones that come to sense are desktop and laptop computers, many other less-assuming gadgets like grocery scanners, ATMs, and smart TVs are computers too.
The diffusion of smartphones, game consoles, wearables, and smart appliances made computers much more readily available in our daily life.
A computer is made up of considerable parts and components that stimulate user functionality.
A computer has two preliminary categories: HARDWARE and SOFTWARE
Physical structure that houses a computer's processor, memory, storage, communication ports, and peripheral devices. Each of these components have a distinct purpose, which may be either accepting inputs, holding data, or sending outputs.
A mouse and a microphone are input devices used to document user exercises and transform them into data that is transmitted to the system unit. A hard disk is a storage unit where data is stored and accessed by other devices. A monitor or a speaker are output devices that convert processed data into video and audio signals.
Usually, the core elements that represent the bare minimum that allow a computer to operate are:
The part that processes and executes information received from hardware and software.
A mainboard that provides the basic connection between all the other hardware components and devices (internal and external).
A temporary data storage space that stores the information the CPU is actively using.
A storage device where data is stored permanently. It’s slower but less volatile than the RAM.
Power supply unit
Without power, no electronic device can function!
All parts of a computer that are not exactly physical, such as data, programs, applications, protocols, etc., are considerably defined as “software.” Although the software has no material form, it is no less essential to receive information, encode, store and process it.
Computer software possesses all executable and non-executable data, such as documents, digital media, libraries, and online information. A computer’s operating system (OS) and all its applications are a software as well.
A computer works with software programs that are sent to its underlying hardware architecture for reading, interpretation, and execution.
Computers are classified according to computing capacity, capacity, size, mobility, and other parts, such as personal computers (PC), desktop computers, laptop computers, minicomputers, handheld computers and devices, mainframes, or supercomputers.