PC Interface and DTMF

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Article #9614

#9614

From: hbg6
Date: Mon, 21 Jan 1991 17:35

19 lines
1392 bytes

I currently am working on a personal project where I need my XT to
receive DTMF (touch tone). I have the circuit working fine feeding
the parallel printer port but I really want to put the decoder on
the bus. I have a few full length proto-boards but they do not have
the interface circuitry ( just a jillion holes ).

Could someone please give me a pointer to a source for an 8 bit bus
interface schematic ( or any other good ideas ).

Thanks in advance,
John

.....................................................................
reply to 'from' address; hbg6@citek.mcdphx.mot.com
NOT the 'sender' line address!
Someday my sysadm will decide this is a 'real' problem. :-)
.....................................................................
All opinions expressed are mine and not Motorolas, their loss.
.....................................................................

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From: hbg6@citek.mcdphx.mot.com
Newsgroups: sci.electronics
Subject: PC Interface and DTMF
Message-ID: <14446@mcdphx.phx.mcd.mot.com>
Date: 21 Jan 91 17:35:47 GMT
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Organization: Motorola Microcomputer Division, Tempe, Az.
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