Other
Karbos Guide: About O Ss and Drivers
The driver/BIOS functions are closely associated with the operating system and this site clearly explains how they work together.
Computer Hope
Computer Hope: Information About the Computer Bios
A complete guide to the computer BIOS, including BIOS ABCs, BIOS Simulations, troubleshooting,and motherboard definitions.
Code.org
Code.org: Cs Fundamentals: Input and Output
Students consider a number of computing devices to determine what types of inputs and outputs they use.