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If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked. Alfred is a long-time teacher and computer enthusiast who works with and troubleshoots a wide range of computing devices. An illustration of desktop computer set comprising all the categories of computer hardware. Computer hardware refers to the physical devices that make up a computer. Examples include the keyboard, monitor, and disk drive. Hardware devices can be classified into four distinct categories:
1. Input DevicesComponents which are used to input raw data are categorized under input devices. They aid in feeding data such as text, images, and audiovisual recordings. They even aid in file transfers between computers. The keyboard is probably the most commonly used input device. Below are just some other types of input devices.
A microphone is an example of a sound input device.
2. Processing DevicesProcessing is the core function of a computer. It is the stage where raw data is transformed into information. Once data has been processed, it can be used for useful purposes.
An AMD microprocessor is an example of a processing device. Components that manipulate data into information are categorized under processing. The microprocessor is the major device in this category. It works closely with primary memory during its operations. Data is stored temporarily in processor cache and primary memory during the processing period. The microprocessor is subdivided into three important units, which work together in order to accomplish its function. The units are:
3. Output DevicesHardware components that disseminate and display both data and information are classified under the output category. Output is the culmination of a cycle which starts with the input of raw data and processing. These components are sub-categorized under softcopy and hardcopy output. Softcopy output includes the intangible experience. The user derives visual satisfaction by reading a message through display components or listens to audio files through speakers. On the other hand, hardcopy output devices are tangible, like printouts of paper and 3D models. The CRT monitor is an output device. Popular Softcopy DevicesVisual display devices include:
Sound devices include:
Network input/output includes:
USB input/output includes:
Popular Hardcopy DevicesImpact printers include:
Non-impact printers include:
4. Memory/Storage DevicesComponents that retain/store data are classified under memory/storage devices. Storage is sub-divided under primary and secondary memory. They are either volatile or nonvolatile. Primary memory usually refers to random-access memory (RAM) but can also refer to all memory that works in tandem with the processor. RAM is volatile, meaning that it retains data only when the computer is powered up. The central processing unit (CPU) or accelerated processing unit (APU) reads instructions stored in this memory and executes them as required. Computer memory devices. Secondary memory is labeled as such because data stored within secondary storage media (usually disk drives) do not communicate directly with the microprocessor. Any data stored in such media is first transferred to a RAM device for processing to take place. This type of memory is also non-volatile since it permits long time storage as opposed to volatile memory. To give some examples of these devices, primary memory includes:
Secondary memory is subdivided into two categories:
This article is accurate and true to the best of the author’s knowledge. Content is for informational or entertainment purposes only and does not substitute for personal counsel or professional advice in business, financial, legal, or technical matters. © 2014 Alfred Amuno Cathy on July 16, 2020: Thanks alot it was of great help emeka on May 31, 2020: thanks dear your article is helpful Samuel on May 20, 2020: Wow!!!!! 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What hardware device is the thing that processes the information on a computer?The processor, more formally known as the central processing unit (CPU), has the electronic circuitry that manipulates input data into the information people want. The central processing unit executes computer instructions that are specified in the program.
What devices get processed information out of a computer?An output device is any peripheral that receives data from a computer, usually for display, projection, or physical reproduction. ... Monitors and printers are two of the most common output devices used with a computer.
Which device process the work of the computer?CENTRAL PROCESSING UNIT (CPU)
Phones, tablets and other small computerised devices also have motherboards, often called logic boards. Many people call their computers the CPU – this is incorrect as the CPU is only a chip found inside a computer.
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