A water-insoluble alcohol that occurs in plant oils (especially wheat germ oil), egg yolks, and liver, and is also produced synthetically. Alpha-tocopherol is the principal form of vitamin E in the body. Chemical formula: C 29 H 50 O 2. See more at vitamin E.
âInputâ is also easy-something put into a system. So in the technology world... An input device is any tool that feeds data into a computer. For example, a keyboard is an input device, whereas a display monitor is an output device. Mice, trackballs, and light pens are all input devices.
REV 1/13. The computer keyboard is used in conjunction with the mouse as the primary input device. The. computer keyboard is very similar to a typewriter keyboard, with the addition of special keys including a. numeric keypad, navigation and editing keys, directional keys, function keys, and the escape key (ESC).