Input and Output In order for a personal computer to be useful, it must have channels for receiving input from the user and channels for delivering output to the user. These input and output devices connect to the computer via various connection ports, which generally, are part of the motherboard and are accessible outside the
computer case. In early personal computers, specific ports were designed for each type of output device. The configuration of these ports
has evolved over the years, becoming more and more standardized over time. Today, almost all devices plug into a computer through the use of a USB port. This port type, first introduced in 1996, has increased in its capabilities, both in its data transfer rate and power supplied.
Bluetooth
Besides USB, some input and output devices connect to the computer via a wireless-technology standard called Bluetooth which was invented in 1994. Bluetooth exchanges data over short distances of 10 meters up to 100 meters using radio waves. Two devices communicating with Bluetooth must both have a Bluetooth communication chip installed. Bluetooth devices include pairing your phone to your car, computer keyboards, speakers, headsets, and home security, to name just a few.
Input Devices
Information Systems for Business and Beyond (2019) pg. 32
All personal computers need components that allow the user
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