Raspberry Pi Collection

cat /sys/firmware/devicetree/base/model

1. Raspberry Pi Model B Rev 2
2. Raspberry Pi 2 Model B Rev 1.1
3. Raspberry Pi 3 Model B Rev 1.2
4. Raspberry Pi Model A Plus Rev 1.1
5. Raspberry Pi Zero Rev 1.2
6. Raspberry Pi Zero W Rev 1.1
7. Raspberry Pi Zero W Rev 1.1

https://en.wikipedia.org/wiki/Raspberry_Pi

https://www.raspberrypi.com/products/