The Raspberry Pi has been a huge success story for Britain, giving millions of people an affordable way to tinker and learn with pocket-sized hardware. Now, the BBC is hoping to make a similar impact with the "Micro:bit." Like the Raspberry Pi, this tiny computer has been created to help youngsters learn the fundamentals of programming and computer construction. Today in London, the broadcaster unveiled the Micro:bit's final design -- a rectangular, credit card-style board measuring 4cm by 5cm -- and some of the all-important hardware features. These include 25 red LEDs, which can show messages and facilitate games, two programmable buttons, an on-board accelerometer and magnetometer. The device also offers Bluetooth LE connectivity, a microUSB slot and five input and output (I/O) rings that can be hooked up with crocodile clips and 4mm banana plugs. It's been a while since the original BBC Micro was considered cutting edge, but even so -- this new device is roughly 18 times faster and 67 times lighter than its spiritual predecessor.