26) Wired and Wireless Keyboard and Mouse (USB, PS / 2, Bluetooth, Wifi). - WIRED KEYBOARD: It is an input peripheral or device, partly inspired by the keyboard of the typewriters, which uses a set of buttons or keys, to act as mechanical levers or electronic switches that send information to the computer. - WIRELESS TUNING: They are usually common keyboards where the communication between the computer and the peripheral is done through infrared rays, radio waves or by bluetooth. -MOUSE WIRELESS: It is a pointing device used to facilitate the management of a graphic environment on a computer. It is usually made of plastic and is used with one of the hands. It detects its relative movement in two dimensions by the flat surface on which it rests, usually reflected through a pointer or arrow on the monitor. -MOUSE WIRELESS: In this case the device lacks a cable that communicates with the computer (computer), instead uses some type of wireless technology. For this, it requires a receiver that receives the wireless signal that produces, through batteries, the mouse. The receiver is normally connected to the computer through a USB or PS / 2 port.