Re: TI-H: TI-Rumble pack

To: ti-hardware@lists.ticalc.org
Subject: Re: TI-H: TI-Rumble pack
From: "David Knaack" <dknaack@hotmail.com>
Date: Sat, 08 Aug 1998 12:03:02 PDT
Delivered-To: ti-hardware-outgoing@towerguard.unix.edu.sollentuna.se
Reply-To: ti-hardware@lists.ticalc.org


>From: Richard Piotter <richfile@prairie.lakes.com>
>I repeat though, is there a circuit, a chip, anything, that can detect 
a pulse
>and give a high if a pulse or a state change exists, and hold it for a
>fraction of a second???

Um, how about a 555?  It takes a negative trigger pulse, which is just
what you would get with the link port, and set up as a monostabel 
it can hold the output high for as long as you want.

Or maybe a 78123 (i think), basicly the same thing, but not as easy
to use.

DK

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