Dual-Full-510
U-Disp – An open source USB display –

The u-disp is an Open Sourced project consisting of two parts. The first part is a circuit board with eight seven-segment displays,a micro controller and an USB interface to connect it to your computer. The second part is a software that runs in the background as a Windows Service on the computer. The software collect information from your computer and/or external sources like Digg.com, your web sites hit counter or some stock values. This information is then shown on the display(s).

U-Disp – Link & Instructable.