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Answer:
Explanation:
All computers have the same four basic building blocks. These are the input devices, output devices, storage devices and the brain of the computer, the Central Processing Unit (CPU).
Input devices
Input devices take data from the 'outside world' (i.e. outside of the computer) and send it to the Central Processing Unit for processing. Data can be collected and entered into a computer in a range of ways. These include, for example, a keyboard, a mouse, a graphics tablet, a touch screen, a bar code reader, a magnetic stripe reader and so on. So data from the world outside of the computer is entered into the computer system using ‘input devices’.
Output devices
Every computer system will need to have a way of displaying information or printing information out so that it is useful to humans. There needs to be, therefore, some ‘output devices’. A very useful output device is a VDU (or Visual Display Unit). Another handy one that allows you to produce ‘hardcopy’ (i.e. a printout on paper) is a printer. It is possible that you also need an audio output. Speakers or headphones would be useful in these circumstances!
Storage devices
Of course, the computer might not want to display or print out the results of some processing immediately. It might simply want to store the results for another time. It therefore needs some storage devices. Storage devices will store data, even when the power to the computer is switched off. When the power is switched on again, the data can be retrieved. For this reason, storage devices are known as ‘non-volatile’ devices. Examples include USB pen drives, hard disks, CDs, CD R/Ws, DVDs, SD and micro SD cards, Blu-ray disks and magnetic tape. The hard drive is a very important storage device in your computer that deserves a special mention at this point in time. Not only does it hold all of your files, even when the power is switched off, it also holds your operating system and all of the programs you want to use, too.
Another increasingly important 'storage device' is cloud storage. This is where you store data on someone else's computer system by uploading files to it across the Internet. This means that you don't have to use your own storage space and your files in theory should be backed up by the cloud company and safe from viruses, although some people are concerned about file security; they have lost control over what happens to their data once it has been uploaded. As long as you have an Internet connection, you can get your files back at any time from any computer. There are many free services available you can set up and use, including Dropbox, Apple iCloud, SkyDrive and Google Drive.
The CPU
Once data has been read into the computer via the input devices, it is processed by the CPU. The CPU then outputs the data using output devices, perhaps to a monitor or speakers, or saves it for later using a storage device.
Answer: Here I have written the about Input, Output, and Storage devices and some examples as you asked.
Input devices : these include various parts of computers which are used to send data or information to a computer or another device but these devices cannot receive any data or signal from other devices. Examples are Mouse - it is use to do various tasks like copying, pasting or moving files on computer based on the user's input, Keyboard - it sends data to computer according to the keys pressed by the user, Scanner - it reads and scans documents in order to send the data to computer through signals, Web Cam which is use to send the captured images to computer.
Output devices : Devices that are use to receive data from computer or another device and create output with the data provided are called output devices. Examples of output devices are Monitor which is use to receive data from input devices and show in the form of texts, images, etc., Speakers which are use to receive signals and play them using vibrations for listening to songs, Printers which are use to receive data from devices and print them on paper.
Storage devices : These are use to store the sent and received data in the form of binary numbers. Examples are SD cards, CD, USB Flash Drives (Pen Drives), etc.
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