[sdiy] Re:

[Ray Wilson]

Hi Allan

I need some clarification to help you.

You mentioned bank numbers going from 1 to 16
that would be 01 to 10 in hexadecimal.

Do the data lines output:
0000 to 1111 (0 to 15 dec) or 0001 to 1111 (1 to 15 dec).

I'm betting they output the former 0000 to 1111 (0 to 15 dec)
which will be 0 to F hex.

This can be done with two binary to seven segment displays that count from 0
to F. Go here:

http://ist-socrates.berkeley.edu/~phylabs/bsc/PDFFiles/DM9368.pdf

Hope this helps.

Ray





----- Original Message ----- 
From: <allanjhall at lineone.net>
To: <synth-diy at dropmix.xs4all.nl>
Sent: Monday, August 02, 2004 9:34 AM


> Hi,
>
> I'm building a blacet miniwave module and I thought it would be nice if
> I had two seven segment led's (each reading 0 to F) to show the bank
number
> (1 to 16) and wave number (1 to 16), rather than the array of (2x) four
> led's normally used, as decoding them is probably a bit too much of a
challenge
> to my counting skills. There are four data lines, so it would be easy to
> get the displays to read from 0 to 10 using a 4511 BCD to hex
decoder/driver,
> however I need each dispaly to read up to 16 (F) in hex, is there an easy
> one chip solution for this or is it more involved?
>
> Other option (even better) would be to use two dual 7 segment displays,
> but it could be tricky getting them to display 1 to 16 rather than 0 to
> 15. Any ideas most welcome.
>
> This is my first posting to this (superb) list and in terms of skill level
> I'm pretty near the bottom of the slope, so do keep replies nice and
simple
> please :-)
>
> Greetings from the Isle of Man (UK)
> Allan
>
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