What exactly is a Euler Bus?

[Ghost]

This question came up on the kickstarter comments page, if anyone could give a brief (or detailed) explanation of what the Euler Bus is and does, that would be great.

Euler bus consider as an extension to Pi bus, it has more UART ports, SPI ports, I2S ports, AV ports and more GPIOs. It also has speaker port and you can connect a small speaker to the port.

Thanks to you, tllim. So the Euler Bus is an extended Input Output interface that allows for further connections of various types from external devices, such as speakers.

To clarify those port types (please correct if wrong):

UART = Universal Asynchronous Receiver/Transmitter 
(https://en.m.wikipedia.org/wiki/Universa...ransmitter)
SPI = Serial Peripheral Interface 
(https://en.m.wikipedia.org/wiki/Serial_P...erface_Bus)
I²S= Integrated Interchip Sound
(https://en.m.wikipedia.org/wiki/I%C2%B2S)
AV = Audio/Video
(https://en.m.wikipedia.org/wiki/Audio_an...connectors)
GPIO = General Purpose Input/Output
(https://en.m.wikipedia.org/wiki/General-...put/output)