On Sat, Nov 17, 2007 at 08:26:39PM +0100, Vincent Trouilliez wrote: > On Sat, 17 Nov 2007 12:38:42 -0600 > David Kelly <[EMAIL PROTECTED]> wrote: > > IIRC the history of I2C was that it was created in retaliation for > > Apple not freely licensing Apple Desktop Bus. I2C never caught on as a > > keyboard/mouse interface but is widely used for other things such as > > temperature sensors. > > Hi David, > > When I learned the I2C bus at school 10 years ago, I bought a nice book > about it, written by a French fellow, Dominique Paret, who says he was > involved in the design of that Bus at Philips. > He says they designed it in the early 80's mainly to connect > integrated circuits cheaply, in high volume appliances (TV's, CD > players to start with, to satisfy Philips own products of that time). > He then explains that the qualities of the bus were quickly recognised > and so, many companies quickly started using it and bought licenses to > develop IC's featuring this interface. > Then, among these companies interested in using this bus, was > Digital/DEC, who signed an agreement with Philips, to derive their own > bus, the "Access.BUS", to put together all the peripherals of their > computer, mouse, keyboard etc. > He says the Access.bus is very close to the I2C bus, directly > compatible electrically-wise, and very close protocol-wise. > > So I think maybe your memory meant "Access.Bus" instead of I2C ? ;-)
That very well could be it. That I2C needed a bit more transmission line ruggedness to suffice where consumers might be yanking and connecting cables higgely piggely. -- David Kelly N4HHE, [EMAIL PROTECTED] ======================================================================== Whom computers would destroy, they must first drive mad. _______________________________________________ AVR-chat mailing list AVR-chat@nongnu.org http://lists.nongnu.org/mailman/listinfo/avr-chat
