Light-emitting diodes -- LEDs -- can do way more than illuminate your living room. These light sources are useful microelectronics too. Smartphones, for example, can use an LED proximity sensor to ...

Desktop Computer Power Button Desktop PC Power Button Switch - External White LED Light With 1.8m Cable PC Power Switch ...

Monitoring your CPU usage isn't the most fun thing in the world, but when you're working with CPU intensive programs it's a necessity. If you're sick of flicking back-and-forth between programs to see ...