The Raspberry Pi is a credit card–sized single-board computer developed in the UK by the Raspberry Pi Foundation with the intention of promoting the teaching of basic computer science in schools - - wikipedia 
Raspberry Pi Model B Revision 1
#Raspberry Pi 2
In early February 2015, the next-generation Raspberry Pi, Raspberry Pi 2, was released.
The new computer board is initially available only in one configuration (model B) and features:
- Broadcom BCM2836 SoC
- Quad-core ARM Cortex-A7 CPU
- VideoCore IV dual-core GPU
- 1 GB of RAM
- Remaining specifications similar to the previous generation model B+
#Pricing
Crucially, the Raspberry Pi 2 retains the same price point of the model B, with the US$20 model A+ remaining on sale.
35 Raspberry Pi 2 20 Raspberry Pi Model A
This can be achieved with ImageMagick or scrot. Install by running the command: