Storage Devices Can Be Categorized as Input or Output Devices
Back
The purposes of input, output and storage devices
All computers have the same four bones building blocks. These are the input devices, output devices, storage devices and the brain of the figurer, the Central Processing Unit of measurement (CPU).
Input devices take data from the 'outside globe' (i.e. outside of the computer) and send it to the Central Processing Unit for processing. Data can be nerveless and entered into a computer in a range of ways. These include, for case, a keyboard, a mouse, a graphics tablet, a touch on screen, a bar code reader, a magnetic stripe reader and so on. Then data from the world exterior of the computer is entered into the calculator organisation using 'input devices'.
Output devices
Every calculator system will need to have a fashion of displaying information or press information out and 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.east. a printout on paper) is a printer. It is possible that yous also need an audio output. Speakers or headphones would exist useful in these circumstances!
Storage devices
Of form, the computer might not want to display or print out the results of some processing immediately. Information technology might simply want to shop the results for some other 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 once more, the data can be retrieved. For this reason, storage devices are known every bit '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 bespeak in time. Not only does information technology hold all of your files, even when the power is switched off, it also holds your operating arrangement and all of the programs you lot want to utilise, too.
Another increasingly of import 'storage device' is cloud storage. This is where you store information on someone else's computer arrangement past uploading files to it across the Internet. This means that you lot don't have to employ your own storage space and your files in theory should be backed up by the deject company and prophylactic from viruses, although some people are concerned about file security; they accept lost control over what happens to their data once it has been uploaded. Equally long as you have an Internet connectedness, you tin go your files dorsum at whatsoever time from any figurer. There are many free services available you can ready and utilise, including Dropbox, Apple iCloud, SkyDrive and Google Bulldoze.
The CPU
Once data has been read into the figurer via the input devices, it is processed past the CPU. The CPU then outputs the data using output devices, perchance to a monitor or speakers, or saves it for later using a storage device.
Back
Source: http://theteacher.info/index.php/f451-fundamentals/3-1-1-components/notes/50-i-o-s
0 Response to "Storage Devices Can Be Categorized as Input or Output Devices"
Post a Comment