The Raspberry Pi has been around for a long time now and has been used in some really cool projects by DIY enthusiasts around the world. When the device launched it sold for $35 for the original Model B. A cheaper version of the device called the Model A is now available to purchase in the US and is priced at $10 less than the original.
The device is available now for $25 and has a decent amount of processing power for all sorts of projects. The Model A consumes about one third less power than the Model B and was envisioned for low-power consuming projects. The $10 discount does come with some notable changes in hardware compared to the Model B.
The Model A has 256 MB of RAM, a single USB 2.0 port, and has no Ethernet port. The board is designed to run the Linux operating system and has a built-in HDMI port. The board has a SD memory card port and a 3.5 mm audio output. The device also features a HD video camera connector for the Raspberry Pi specific camera.
The processor on the small board runs at 700 MHz. It appears that $25 Model A is currently out of stock at most sellers. The board measures 85.6 x 53.9 x 17 mm, and enclosures as well as other accessories and add-ons are available to go along with the Raspberry Pi to complete your project. The Model A was only available in Europe previously.