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= __I/O tools for various communities__ =

First lets get familiar with what is input and output devices
__Input devices__ is a machine that feeds data into computer. Example mouse keyboard etc.

__Output devices__ are the things w e use to get information out of a computer. Example monitor speakers

Their are various communities in this world. They include kids, adults, aged etc. But their are also some who are physically challenged, like who don't have eyesight or those who doesn't have hands to write on keyboard. Science have taken out solution for all kinds of communities in this world and now everyone has got a way to interact with the computer. I'll be dealing with various types of I/O devices various inhabitants use to make their work easier and to save time.

**__I/O devices for people who are disabled by eyes__

It is quite tough for those who cannot read or visualize things. Therefore science have invented things like **** screen magnifiers ****, which helps to enlarge things that are z displayed things on the computer in variety of fonts. ** There are other things like __voice synthesizers__ software's which produce variety of voices and helps those who cannot see but can hear.
 * Output devices:

__I/O Devices for Graphic Designers__ Graphic designers do maximum of their work on computer. They also require good software's and hardware's for their perfection. Therefore they use things like __graphic tablets__, which allows to dram images and graphics in a similar way like a pen and paper. They also use light pen, which allows them to dram on screen, with more accuracy than touch screen and in 3 dimensions.

Graphic designers require a wide screen monitor with high resolution so that they can perform their task with more accuracy



__I/O devices for those who work in supermarket__ People working in supermarket have to be fast and quick in their work. Therefore they use touch screen monitors so that they can be fast and deal with more customers in less time. You might have seen those black and white strips on the back of several products They store information about the product like where its from, its cost and many more Bar code readers, are used to read those codes and decrease the waiting time for customers.

Output devices: __Billing systems__, they help the workers in supermarket to calculate they total amount customer have to pay in few seconds. This saved time of both customer and worker. ** Acknowledgement: [] (for the mouse picture) [] (for the keyboard picture) [] (for the monitor picture) [] (for the speakers pic) [](for on screen enlarger pic) (graphic tablet) (light pen) [](bar code reader)