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2 External Devices

 

A computer is somewhat similar to a human being.  We consist not only of a brain giving us the ability to think and to memorize, but also of the eyes, the ears, the hands etc. which connect us with the external world. A computer needs also additional external devices to communicate with its surroundings.

 

Contents

 

2.1 Input Devices
2.2 Output Devices
2.3 Standard Devices

 

2.1 Input Devices

 

For a computer, the Input devices have the same meaning as the senses for us. Just as we reach the information from our surroundings through our eyes, ears, touch, smell etc., a computer uses the input devices to get data.

 

There is a plenty of input devices available today. The most important are the keyboard and the mouse which I will explain separately.

 

Let's mention here only some of the input devices.

 

 

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2.2 Output Devices

 

Through the output devices we get the results of the computation made on all the input data. An output device is for a computer something like our mouth for us or our hands with which we can write.

 

The most important output device is the computer screen or display. I will speak about it separately.

 

Some other output devices are:

 

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2.3 Standard Devices

 

We can say that a computer necessarily needs the standard input and output devices to be completely applicable. These devices are keyboard, mouse and display. I introduce all of them separately.

 

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