I don't think you'll find an off the shelf cable for doing that. Most of
them look like network devices to each of the computers. Can't the teacher
just take a floppy or a cd, or a USB Storage device?

On Thu, 8 Sep 2005, Joseph Mack NA3T wrote:

> Some of the kids at my son's school use a device called an
> AlphaSmart to upload their homework and answers to tests
> into the teacher's computer.
>
> This device is a keyboard with a 10x40char LCD display and
> editor and enough memory to store a few pages of ascii text
> files. It appears as a USB keyboard to the host computer.
> The kid plugs in the USB cable, fires up the editor on the
> host computer and hits "send" on the device, whereupon text
> starts filling up the screen on the host computer. You can
> also just use the device as a USB keyboard.
>
> Since these devices are about $400, they're more expensive
> than a used laptop. Is it possible to use a laptop as a USB
> keyboard? I assume I'd need a USB bridge cable as the
> transport level. However at some higher level (don't know
> what it's called) the laptop thinks it's managing a USB host
> controller, rather than being a USB keyboard.
>
> Is it possible to have the laptop function as a USB
> keyboard?
>
> Thanks Joe
>
>

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