One such example of using an analog display was carried out by programmer and hobbyist electrician Cristiano Cesaretto. He grabbed a cheap old tachometer, usually used to display a car's engine revs, from eBay and then modded it to display his PC's CPU usage via a USB cable.
Christiano details how he achieved this mod on his blog, and you can find more general instructions over at DIY Life.
Check out the completed modification in action:
[Via Hack A Day]
Follow GeekTech and Chris Brandrick on Twitter.
Note: When you purchase something after clicking links in our articles, we may earn a small commission. Read our affiliate link policy for more details.