Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!cs.utexas.edu!yale!cs.yale.edu!rt4-gw.cs.yale.edu!jim From: jim@fuji.eng.Yale.edu (James J. Szinger) Newsgroups: sci.electronics Subject: Re: sequencer... Message-ID: Date: 9 Dec 90 21:05:22 GMT References: <4758@tellab5.tellabs.com> <3023@naucse.cse.nau.edu> Sender: news@cs.yale.edu Organization: Yale Univerity, Intelligent Sensors Lab, Elect. Eng. Lines: 22 Nntp-Posting-Host: fuji.eng.yale.edu In-reply-to: rrw@naucse.cse.nau.edu's message of 9 Dec 90 05:00:18 GMT In article <3023@naucse.cse.nau.edu> rrw@naucse.cse.nau.edu (Robert Wier) writes: > From article <4758@tellab5.tellabs.com>, by verive@tellabs.com (Jeff Verive): >> There are a lot of ways to do this. If you really want to, you could >> set up a state machine with flip-flop's and assorted gates, but this >> is fairly complicated for the uninitiated. You might try counting >> through some ROM, like you would do for an arbitrary wave generator, >> but the simplest thing to do is to use any cheap oscillator (like the >> 555) and feed its output to the clock input of a CMOS 4017 decade >> counter. Works great (less filling, too!) :-) >> >> Jeff > Or you could use extreme overkill, like we just did in our > microprocessors course, and use an 8085 to do it! :-) > (this was a lab assignment)... > - Bob Wier Our micro class did that also. Then in out mini-computer class, I seem to remember a lab assignment involving programming a PDP-11 to do this. :-) Jim