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Variscite are making computer boards for use by PC makers that are extremely small for their computing power. The 2 Euro coin shown in the picture is about the size of our 50 cent piece.
The DART-4460 features a 1.5 GHz dual core 'ARM' processor with 1GB of RAM and 8GB of Flash Hard Drive. It's a complete system with WiFi, Bluetooth, HDMI out, SD card support and USB ports. This unit has been optimised for Android / Linux and would be capable or running Firefox, Chrome, Libreoffice and VLC media player. Power requirement is about a tenth of a Watt so it could be sourced from the HDMI outlet which connects to the Monitor or TV. Keyboard, mice and cameras can be run from WiFi or USB ports.