Input Devices: Keyboard, Mouse & Touch Screen

This lesson discusses installing and connecting input devices, devices that allow us to input and manipulate data on our computing systems.  We begin with the keyboard and mouse which are the most familiar. Keyboard and mice are plug and play devices, as there is typically no software required to use one. The motherboard recognizes the keyboard or mouse is connected, but on occasions where the motherboard reads the OEM instructions first, as those installations are sequential.  Computing systems cannot operate or function without an input device, so the keyboard and mouse are always instantly recognized by the computer system software and BIOS. Both the keyboard and mouse have a PS/2 connector, some are color coded purple and green, some are not but today, most OEMs have moved to using the USB connection. We’ll explain the relationship between how a computer and keyboard/mouse communicate and what in terms of signaling happens between the mechanical and optical keyboard and mice. Touch screens are another input/out device because we put in specific input then see the results on the screen.  You’ll learn what an overlay screen is, why it would be needed and how to set it up for use.
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