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An object that can be programmed to store, retrieve, and process data is a computer. The term “computer” was first used by people (human computers) who used automatic calculators like the abacus and slide rule to conduct numerical computations. Later, when mechanical equipment replaced human computers, the word was also used for those. Computers of today are electrical machines that receive data (input), process that data, create output, and store the outcomes (storage) (IPOS).

Computer overview

The illustration below shows a computer’s essential components. The image below shows the desktop computer, flat-panel monitor, speakers, keyboard, and mouse. There are labels on every input and output device as well.

A computer is an electronic device that is designed to perform various tasks using a set of instructions or programs. It is composed of hardware components such as a central processing unit (CPU), memory, storage devices, input/output devices, and a motherboard that connects all the components together.

The CPU is the “brain” of the computer, and it processes data and executes instructions. Memory, also known as RAM, stores data that the CPU is currently using, while storage devices such as hard disk drives (HDDs) and solid-state drives (SSDs) store data for long-term use.

Input devices such as keyboards, mice, and touchscreens allow users to input data and commands, while output devices such as monitors, printers, and speakers display or produce the results of those inputs. The motherboard connects all of these components together and facilitates communication between them.

Computers can run a variety of software applications that enable users to perform a wide range of tasks, such as word processing, web browsing, gaming, and multimedia editing. They can be used for personal or business purposes, and they are widely used in many industries, including education, healthcare, finance, and manufacturing.

Computers come in many forms, including desktops, laptops, tablets, and smartphones, and they can be connected to networks to enable communication and data sharing between multiple devices.

How are computers used today?

Computers perform tasks that were formerly difficult but are now much more straightforward. For instance, using a word processor allows you to quickly and easily create a letter, update it whenever you choose, spell-check it, print copies, and email it to anybody on the globe. In the past, doing all these chores would have required days, if not months. These examples barely touch the capabilities of computers.

The hardware and peripherals listed below are all or some of what modern desktop computers include. Older devices like a floppy disc drive and a Zip drive (publicized below) are no longer necessary or had as technology develops.

Example of the front of the computer case

Bay

Case or Chassis

Case Fan

Optical drive: Blu-ray, CD-ROM, CD-R, CD-RW, or DVD.

CPU (processor)

Floppy disk drive

Hard drive

Keyboard

RAM (random access memory)

Microphone

Monitor, LCD, or another display device.

Motherboard

Mouse

Network card

Power Supply

Printer

Sound card

Speakers

Video card

Wearable

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