This article is the seventh in the series how computers work.
For this article, the external peripherals of the personal
computer will be explored. These peripherals include input and
output devices, equipment that attaches to the ports and
optional external devices. The peripherals that are necessary to
the operation of a personal computer include a keyboard and
mouse. Both of these devices are considered input devices and
like many other components there are several types and models
available. The standard keyboard and mouse are usually provided
with the computer and are connected via a cable to the specific
keyboard and mouse ports on the computer. The mouse is usually a
two-button mouse with a scroll wheel while the keyboard is a
typical 104 key QWERTY keyboard. Newer keyboards and mice are
available that provide additional functionality such as a
wireless connection to the computer. In addition, many keyboards
have additional keys that can programmed for special functions,
internet access keys and music