Secure Hash Algorithm (SHA) refers to a group of standardized cryptologic hash functions is the basis for creating a digital signature.
30 Cool DIY Ideas for Your Computer
DIY Ideas for Your Computer - Cool Desk, Home Office, Bulletin Boards and Tech Projects for Kids, Awesome Tips and Tricks for Your Laptop and Desktop, Best Shortcuts and Neat Ways To Make Your Computer Even Better With Productivity Tips http://diyjoy.com/diy-ideas-computer
VoCore: A coin-sized Linux computer with wifi. VoCore is an open hardware runs OpenWrt. It has WIFI, USB, UART, GPIOs but size is only one inch. It helps you make a smart house or study embedded system. On Indiegogo.