Raspberry Pi organisation link https://www.raspberrypi.org/

Raspberry Pi Model Description Image
Raspberry Pi Zero Single 1 GHz processor, 512 MB RAM

40 input / outputs, micro SD card socket for storage, mini HDMI video

MIPI camera socket, Micro USB power, 5 volts 700 mA

Linux operating system

65 mm x 30 mm
Raspberry Pi Zero - computer
Raspberry Pi Zero W Single 1 GHz processor, 512 MB RAM, WiFi n, Bluetooth 4

40 input / outputs, micro SD card socket for storage, mini HDMI video

MIPI camera socket, Micro USB power, 5 volts 700 mA

Linux operating system

65 mm x 30 mm
Raspberry Pi Zero W - computer and WiFi
Raspberry Pi 2 Quad 900 MHz processor, 1 GB RAM, Ethernet

40 input / outputs, micro SD card socket for storage, HDMI video

MIPI camera socket, MIPI LCD display socket

4 x USB 2 ports, Micro USB power 5 volts 1.8 Amps

Linux operating system

85 mm x 56 mm
Raspberry Pi 2 computer
Raspberry Pi 3 Quad 1.2 GHz processor, 1 GB RAM, Ethernet, WiFi n, Bluetooth 4

40 input / outputs, micro SD card socket for storage, HDMI video

MIPI camera socket, MIPI LDC display socket

4 x USB 2 ports, Micro USB power 5 volts 2.5 Amps

Linux or Windows 10 Core operating system

85 mm x 56 mm
Raspberry Pi 3 computer
Raspberry Pi Compute 3 Quad 1.2 GHz processor, 1 GB RAM, 4GB flash storage

46 input / outputs, HDMI video pins

MIPI camera, MIPI LCD display pins

1 x USB pins from chip, 5 volt 700 milliamps

Linux operating system

67 mm x 31 mm.

The module uses a standard DDR2 SODIMM form factor for all connections.
Raspberry Pi compute computer

Raspberry Pi uses for Internet of Things

Raspberry Pi Zero

This Raspberry Pi can be used to create a smart device.

Raspberry Pi Zero W

This Raspberry Pi can be used to create a small smart device with sensors and communications.
This computing power can be gained for about $15 AUD.

Raspberry Pi 2

This Raspberry Pi can operate an IoT device and have Ethernet and / or Bluetooth connections.

Raspberry Pi 3

This Raspberry Pi can operate an IoT device and have Ethernet / WiFi / Bluetooth connections.

Raspberry Pi Compute 3

This Raspberry Pi can be used to add computing power quickly to an appliance.

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