test program for keypad(Extended not only 3x4 but 4x4,4x5 and 5x5 keys)

Dependencies:   Keypad

Fork of study_step0 by Team_PjL

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

Revision:
4:0564f82dd0ef
Parent:
3:0c888cad9376
Child:
5:53fb9eed6b67
diff -r 0c888cad9376 -r 0564f82dd0ef select_example.h
--- a/select_example.h	Mon Apr 13 02:07:09 2020 +0000
+++ b/select_example.h	Sat Aug 01 07:49:39 2020 +0000
@@ -5,7 +5,7 @@
  *  http://www7b.biglobe.ne.jp/~kenjia/
  *  https://os.mbed.com/users/kenjiArai/
  *      Created:    April      5th, 2020
- *      Revised:    April     13th, 2020
+ *      Revised:    August     1st, 2020
  */
 /*
     You can select several examples as followings.