Holding down the shift key at the same time produces the code 01000001 representing the upper case letter 'A'. Mouse - the movement of the mouse over a flat surface is mirrored by a pointer on the monitor screen. Buttons on the mouse enable selections to be made from menus, movement of objects around the screen, and painting or drawing. Joystick - works in similar way to a mouse but usually used for playing action games. Microphone - for the input of voice in place of using the keyboard and mouse.
Special software is used to convert voice into text or to activate menu options.
This requires fast processing and a lot of memory and will become more common as the technology improves. Digital camera - light received through the lens is converted to digital signals by sensors, rather than stored by chemical change on a film as in a normal camera. Video digitizer - enables video signals from a standard video camera or cassette recorder to be read into a computer. The video can then be stored as a file, displayed on screen and edited. Still images can be captured and printed or used as clipart.