Message-ID: <3A4F38B9.6821B909@usa.net>
Date: Sun, 31 Dec 2000 14:46:33 +0100
From: "Alberto di Bene" <dibene@usa.net>
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To: rsgb_lf_group@blacksheep.org
Subject: LF: Re: New Years wish
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Andrew Talbot wrote:

> [snip]
> Interfacing via the parallel port is easy enough in DOS and WIN 3.1 but in
> WIN9x it is a bit hit and miss depending on the ports implementation.
> 16 bits via the serial port beeds really three bytes per sample.   It can of
> course be sent directly as two 8 bit words, but there is no way of keeping
> in sync and knowing which word is high / low etc.   By transmitting the 16
> bits over 3 words, check bits can be included to positively identify which
> word is which out of the frame of three.
> [snip]

If someone is seriously considering designing and prototyping an acquisition
board for the PC, please don't forget to give a more than casual thought to
the USB port. It is an high-speed serial interface, and can even provide power
supply to the connected devices.
The old parallel and serial ports are on their way to the retirement...

73
Alberto    I2PHD