[sdiy] 4 bit binary to 7 segment hex decoder?

[The Old Crow]

On Mon, 19 Feb 2001, Paul Maddox wrote:

> Care to release code? sell chips?

  I'll need to find the code, its been a while.

  In the meantime, have a look at Microchip appnote #AN511, which shows
an example of PLD replacement using PICs, the example being a 7-segment
decoder:

http://www.microchip.com/Download/appnote/category/16c5x/00511e.pdf

  The target device in the appnote is the venerable 16C54, but the same
thing can be done using the 16C505 with its internal clock and 12 I/Os.

  Using a 16C54, I've done up to 4 multiplexed digits, using the segment
driver lines for both data input and segment drive output in various
combinations.

Crow

/**/