keypad 1.34 is now available at:

      http://www.tundraware.com/Software/PIC/keypad/

'keypad' is a PIC based system for decoding switch matrix type numeric
keypads with up to 4 rows and columns.  The keypad switch matrix is
read, and if a key is pressed, it is converted into an equivalent
binary value (0-0fh) for output.  Full debounce logic is included to
suppress mechanical switch bounce effects.

Output can either be a 4-bit parallel word or a serial clocked output.
Both serial and parallel outputs support a "latching" pulse to drive
external interface timing.

This release contains the following changes:

- A 125ms delay has been introduced between keyboard scans to lower the
   keyboard repeat rate to something human.  In the previous version (1.31),
   there was no such delay and it was impossible to press a key and only get
   a single copy of the digit.

- A severe bug in the serial output routine has been fixed.  The previous
   version serial output did not work at all - now it is fine.

- A Printed Circuit Board layout in Eagle .BRD format is included.  I am
   awaiting boards from Olimex at will put a picture up of the finished
   product at the above URL when those boards arrive.

--
------------------------------------------------------------------------------
Tim Daneliuk
tundra@tundraware.com

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