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Article #7139

MIDI keyboard scanner chip

#7139
From: Jerry Marshall
Date: Fri, 04 Sep 1992 15:20
43 lines
1970 bytes
I am posting this for a friend who cannot access this group.  Please reply
to me via email.  Thanks for any help you can provide.

Jerry Marshall
==============================================================

  Anybody have any idea how I would go about buying some chips from a place
  in England?  I found something on the net that would be perfect for a musical
  toy I want to build.  It's a keyboard (i.e. synthesizer) scanner that outputs
  serial data according to MIDI (the synthesizer standard protocol) specs.
  Sounds like one needs to add a clock crystal and power, and the rest is in
  the chip.  So what's the conversion from "pounds sterling" to US dollarinos?
  Better yet, if anybody has anyway to find out if such a chip is built and
  distributed in the US, that would be great.

  This is it:
  Maplin Electronics
  P.O. Box 3
  Rayleigh
  Essex
  SS6 2BR

  Telephone : 0702 554161
  Fax : 0702 553935
  Telex : 995695(MAPLIN G)
  Cashtel : 0702 552941

  MIDI Device : E510 keyboard scanner for touch sensitive Keyboards
  Page : 422 - 423
  Order Code : KU41U
  Price : 24.95 Pounds sterling

  Description : A fully polyphonic fast keyboard scanner with serial data
  output to MIDI specs. Up to 128 keys can be scanned, each touch
  sensitive with a resolution of 128us (256us with 4MHz clock). 

  Specification

  Supply voltage : 5v +/- 5%
  Supply current : 5mA
  Max clock rate : 8MHz
  Package : 16 pin DIL
Technical Details
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From: jmjr@hpcvcbw.cv.hp.com (Jerry Marshall)
Newsgroups: sci.electronics
Subject: MIDI keyboard scanner chip
Message-ID: <1992Sep4.152029.4437@hpcvca.cv.hp.com>
Date: 4 Sep 92 15:20:29 GMT
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