Computer I/O Devices

In this technology lesson, discover many different kinds of scanners—from document scanners to biometric scanners—and learn how they process information.

In this lesson, computer expert Todd McLeod discusses digital advances in cameras as well as displays, and how they have changed photography.

In this lesson, tech expert Todd McLeod discusses advances in microphones and audio recognition and how they affect the way we can interact with our computers.

In this lesson from computer expert Todd McLeod, discover the history and use of some of the lesser understood keys on a computer keyboard.

In this lesson, tech expert Todd McLeod discusses technology to protect your hearing as well options for keeping the volume in your headphones reasonable.