Save guides, add subjects and pick up where you left off with your BBC account. Hardware is the physical components of a computer. Software is the programs that run on a computer.

Coordinating complicated interactive systems, whether it's the different modes of transportation in a city or the various ...

Most computer ... modern systems' software layers can make troubleshooting tricky. However, reinstalling troublesome apps or checking for updates is often all that is needed. The above diagram ...