COMPUTER HARDWARE BLOCK DIAGRAM
An Input device feed raw data to the processor. A processor processes raw data and turns it into useful information. A storage device keeps or stores both process and unprocess data for later usage. An output device shows or display the processed data. INPUT DEVICES
When data is entered into the computer system, it is called an input. Input
Keyboard, mouse, scanner, barcode reader and digital camera are some example of input devices.
OUTPUT DEVICES
Output is the result of raw input data that has been processed by the central processing unit into meaningful inf
ormation. Common forms of output are texts, numbers, graphics, sounds, animations and videos.The most common output devices are computer screens, speakers and printers.
STORAGE DEVICES
The system’s primary storage, Random Access Memory (RAM) can only hold data temporarily. Thus, secondary storage is needed to provide additional storage. The data stored in the secondary storage is considered permanent until it is deleted or removed.
Secondary storage can be magnetic disks and optical disks. Examples of secondary storage are hard disks, rewritable CDs and DVDs as well as removable disks such as pen drives.
PERIPHERAL DEVICES
External hardware devices attached to the computer are called peripheral equipments.