The Raspberry Pi is a series of credit card-sized single-board computers developed in the United Kingdom by the Raspberry Pi Foundation to promote the teaching of basic computer science in schools and developing countries. Several generations of Raspberry Pis have been released:

Year Raspberry Model Characteristics Max Power
2012 PI 1 Model A+ ARM V6 32 bit Single-core 700MHz BCM2835 – 256 MB RAM 5V. 700mA.
2014 PI 1 Model B+ ARM V6 32 bit Single-core 700MHz BCM2835 – 512 MB RAM 5V. 1.8A.
2015 Pi 2 Model B ARM V7 32 bit Quad-Core 900MHz BCM2836 – 1 GB RAM 5V. 1.8A.
2015 Pi Zero ARM V6-11 32 bit Single-Core 1GHz BCM2835 – 512 MB RAM 5V. 310 mA.
2016 Pi 3 Model B ARM V8 64 bit Quad-Core 1.2GHz BCM2837 – 1 GB RAM 5V. 2.5A.

Raspberry Pi Family Photo

Raspberry PI 3 Features