If the CPU is the brain of the computer, then the input devices are its eyes and ears. From the users point of view, input devices are just as important as CPU - more so , in fact . After you have purchased and setup the computer, you can take the CPU for granted because you interact directly with the input devices and only indirectly with the CPU. Your ability to use input devices is critical to your overall success with the whole system.
An input device does exactly what its name suggests: it enables you to input information and commands into the computer. the most commonly used input devices are the keyboard and mouse. In fact if you buy a new personal computer today it will include a keyword and mouse . It will include a keyboard and mouse unless you specify otherwise. As you will see, many other types of input devices are available, including variations of the mouse and specialized "alternative" input devices such as microphones and scanners.
the keyboard was one of the first peripherals to be used with computers and it is still the primary input device for entering text and numbers. A relatively simple device, a standard keyboard includes about 100keys, each of which sends a different signal to the CPU.
If you have not used a computer keyboard or type writer, you will learn quickly that you can use a computer much more effectively if you know how to type.the skill of typing or keyboarding, as it is often called today, implies the ability to enter text by using all ten fingers and without being able to type , and many people do. some people claim that when computers can understand hand writing and speech, typing will become unnecessary. But for now and the foreseeable future, keyboarding remains the most common way to enter text and other data into a computer
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