The Raspberry Pi 2 Model B

The Raspberry Pi 2 Model B is the second-generation Raspberry Pi. It replaced the original Raspberry Pi 1 Model B+ in February 2015.

Compared to the Raspberry Pi 1 it has:
    A 900MHz quad-core ARM Cortex-A7 CPU
    1GB RAM
Like the (Pi 1) Model B+, it also has:
    4 USB ports
    40 GPIO pins
    Full HDMI port
    Ethernet port
    Combined 3.5mm audio jack and composite video
    Camera interface (CSI)
    Display interface (DSI)
    Micro SD card slot
    VideoCore IV 3D graphics core

For More Details on PC Click here

For More Details on Portables Click here