Once you've pressed a key on the keyboard and the signal gets to the computer, what happens next? Dr Steve Bagley on the software side of a key-press.

Key Presses pt1: https://youtu.be/ewE8b7zzej0

https://www.facebook.com/computerphile
https://twitter.com/computer_phile

This video was filmed and edited by Sean Riley.

Computer Science at the University of Nottingham: https://bit.ly/nottscomputer

Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com