Keypad program runs on OS2. Extended not only 3x4 but 4x4,4x5 and 5x5 keys.

Dependencies:   mbed Keypad

see /users/kenjiArai/notebook/keypadkey-matrix--control/

Revision:
3:8a7b6370956f
Parent:
2:d0ae519c229c
--- a/select_example.h	Mon Apr 06 04:59:45 2020 +0000
+++ b/select_example.h	Mon Apr 13 02:07:27 2020 +0000
@@ -5,7 +5,7 @@
  *  http://www7b.biglobe.ne.jp/~kenjia/
  *  https://os.mbed.com/users/kenjiArai/
  *      Created:    April      5th, 2020
- *      Revised:    April      6th, 2020
+ *      Revised:    April     13th, 2020
  */
 /*
     You can select several examples as followings.
@@ -15,7 +15,7 @@
     3.  key_5x5.cpp
     4.  key_complex.cpp
  */
-#define PROG_NUMBER     4       // select 0 to 4
+#define PROG_NUMBER     0       // select 0 to 4
 
 //----------------- You don't need any modification ----------------------------
 #if PROG_NUMBER      == 0