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- Path: sparky!uunet!usc!wupost!gumby!destroyer!ubc-cs!unixg.ubc.ca!kakwa.ucs.ualberta.ca!ersys!outlan!grant.ranson
- From: grant.ranson@outlan.ersys.edmonton.ab.ca (Grant Ranson)
- Newsgroups: sci.electronics
- Subject: Re: hex display
- Message-ID: <2582.140.uupcb@outlan.ersys.edmonton.ab.ca>
- Date: 28 Jul 92 19:11:00 GMT
- Reply-To: grant.ranson@outlan.ersys.edmonton.ab.ca (Grant Ranson)
- Distribution: world
- Organization: Outland BBS-UUCP
- Lines: 35
-
- TO:ALL
- FROM:grant.ranson@outlan.ersys.edmonton.ab.ca
-
- A further suggestion, regarding the hex display question mentioned
- below:
- JS>
- JS> In article <55066@mentor.cc.purdue.edu>
- JS> > falatic@mentor.cc.purdue.edu (MacGyver) writes: Hi! I am looking
- JS> > for a chip to convert BCD (actually, straight 4 bit binary) to
- JS> Hexadecimal (A-F). I need something LIKE a 7447 driver, but that
- JS> > one does not treat 10d-15d the way I need. Anyone who can help,
- JS> > please reply thru E-Mail if possible, or post here.
- JS>
- JS>
- JS> How's your budget? :-) The IDEAL part is the HTIL311 display
- JS> from Texas Instruments. Inside the packeage are: a four bit latch
- JS> (tristate), BCD to display converter, LED drivers, and a 5 X 7
- JS> matrix of LEDs. Apply BCD data to the input pins, pulse the DV (
- JS> data valid ) pin, and presto, hex code shows up on the display.
- JS>
- JS> I'm using these in a DTMF project I'm working on. Unfortunatly the
- JS> last time I dared to ask they cost about $13 each, but still a cool
- JS> part.
- JS> John
- JS>
- JS>
- JS> ------------------------------------------------------------------------
- JS> John Schuch hbg6@phx.mcd.mot.com
-
- You might want to try programming a small EPROM (2708-style) with a
- table containing segment pattern info for each of the 16 possible
- inputs. Connect the incoming data to a0..a3 of the 2708, and feed its
-
- ---
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