You must have some way of having into your personal computer system. The standard way to make this is through the typewriter-like-part of your system called the keyboard.You can enter information into the personal computer by typing characters you link on the keyboard.
Another type of source of input is diskettes. Not only can you kept information on and recover information from diskettes, but you can also purchase diskettes with prerecorded information. by typing directions on your keyboard, you can foretold the computer to read and analyze the information recorded on these diskettes and load into the memory for processing.
Output Devices
The main output device for your personal computer is the monitor, s small handy television scrren attached to your keyboard, the characters you type and enter are flashed on the monitor.
In your own decision, you can also attach other output devices, such printers, plotters, and modems, to your personal computer. Several kind of printers are available. Some are very fast and economic and can print all characters including special graphics symbols, but do not produce letter-quality printout. Laser printers create typewriter output and graphics, but are somewhat slower.
Plotters are used to draw and inanimate pictures, often in color. Modems are devices that make it possible for personal computers to communicate with one another over telephone lines.
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