Raspberry pi

Raspberry Pi  is an ultra-lowcost credit-card sized single-board Linux computer which  was conceived with the primary goal of teaching computer programming to children.It was developed by the Raspberry Pi Foundation, which is a UK registered charity .


Hardware:

It comes in two variants, model A and B, with B having more features.

• SoC:system-on-chip featuring

1.    CPU core : ARM11 core 
2.    GPU core:  Broadcom VideoCore IV GPU providing OpenGL ES 1.1, OpenGL ES 2.0.
3.    256MiB of (Hynix MobileDDR2 or Samsung Mobile DRAM) SDRAM (or 512MB Mobile  DRAM on later boards).The RAM is physically stacked on top of the Broadcom media processor 

• LAN9512
• Micro USB power jack (5v - Power Only)
• HDMI connector .
• Composite Video connector: RCA
• Memory card slot (underside)
• Either 1x USB 2.0 (Model A) 2x USB 2.0 (Model B)

Software:The Raspberry Pi uses Linux kernel-based operating systems. Raspbian, a Debian-based free operating system optimized for the Raspberry Pi hardware, is the current recommended system, released in July 2012.