The Raspberry Pi 4 Model B is the latest version of the popular credit card sized computer. Just add a keyboard, mouse, display, power supply, micro SD card with installed Linux Distribution and you'll have a fully fledged computer.
Raspberry Pi Boards
The Raspberry Pi 3 Model B+ Australian version (Raspberry Pi 3 Model B Plus Australian version) is the latest version of the Raspberry Pi, a tiny credit card size computer.
The Raspberry Pi 3 Model A+ is the latest product in the Raspberry Pi 3 range. Like the Raspberry Pi 3 Model B+, it boasts a 64-bit quad core processor running at 1.4 GHz, dual-band 2.4 GHz and 5 GHz wireless LAN, and Bluetooth 4.2/BLE.