Input/Output, Processing, Communication and storage devices!
INPUT AND OUTPUT DEVICES
Examples of input devices are keyboards and mouses. The advantage of a keyboard is that it lets you input text into a computer very quickly and a mouse is an easy way to select icons or options on the screen.
Examples of output devices are computer monitors and printers. The advantage of a monitor is that it lets you see clearly what you are currently doing and the advantage of a printer is that it lets you create a hard copy of your work.
HDD stands for: hard disk drive. It is the main, and usually largest, data storage device in a computer. The operating system, software titles and most other files are stored in the hard disk drive. The hard disk drive uses magnetism to store data. HDDs do not retain data after their power supply has been cut.
SSD stands for: solid state disk. It uses integrated circuits as memory to store data as it contains no moving parts unlike HDDs and floppy disks. Also the SSD retains data even when it has no power supply.