Let's Encrypt is a free, automated and open certificate authority (CA). It is provided as a service by the Internet Security Research Group (ISRG). It is written in the Python language. By using sudo command you install the certificates on your server. It is compatible with Apache and Nginx. Therefore, you need to just install it on your server if you are using Apache or Nginx.

By using social networks and other special commerce sites, was always the threat of insecurity. To secure privacy in data transmission need optional secure connection. Now a day many well known sites like Facebook, twitter, ICTBroadcat are utilizing HTTPS to protect secret information. What is HTTPS and how its working lets see.

The trend of low cost small PCs computer is grow in early 2010. The low cost small PCs is not doubt most successful invention in the history of computing. Due to low price and small in size, small PC market have been getting a lot of attention from consumers and industry owners.When we talk about low cost and small size PCs, two names comes in mind Raspberry Pi and CHIP.

Open source hardware (OSH) is also called open hardware. It is an open design movement that could be copyrighted or licensed but it has been made available for public use at no charges. It includes all the necessary information like documents, schematic diagrams, construction details, parts lists and logic designs. Open source hardware also known as free and open source hardware.

Now a days trend of small PCs growing day by day. Small PCs evolve to meet the different needs of consumers. They are becoming the first choice of consumer with every increasing day. The concept of Small PCs first introduced Raspberry Pi. Raspberry Pi introduced the world first cheapest small PC just $35. Now a new small CHIP PC is available only $9.

Raspberry Pi 2 is an excellent upgradation of Raspberry Pi. Raspberry pie has added some new features in its new release. Raspberry Pi 2 Model B is the second generation Raspberry Pi. Raspberry Pi 2 has a faster processor. Its specification is 900MHz quad-core ARM Cortex-A7 CPU and IGB RAM. Raspberry Pi 2 can run the full range of ARM GNU/Linux distributions. Raspberry Pi 2 has an identical form factor to the