Input/Output devices
作者：lashawn tellis
1. Computer keyboard is for entry of data and manipulating the system. It is an input device for data into the computer.
1.1. New node
2. computer mouse can be both wireless and plug in to the computer . They are used to navigate through websites as well as other applications on the computer.
3. PSC
4. speakers are used to amplify sound
4.1. New node
5. Monitor
