| ??? 11/10/02 22:01 Read: times |
#32249 - RE: keypad matrix - one pin needed |
You can read a keypad matrix with only ONE microcontroller pin, this has to be an analog/digital converter pin and the matrix needs a special layout with a few resistors.
Regards, Enrique. |
| Topic | Author | Date |
| ST New uPD3200 | 01/01/70 00:00 | |
| RE: ST New uPD3200 | 01/01/70 00:00 | |
| RE: ST New uPD3200 | 01/01/70 00:00 | |
| RE: ST New uPD3200 | 01/01/70 00:00 | |
| RE: keypad matrix // Michael | 01/01/70 00:00 | |
| RE: lcd/keyboard | 01/01/70 00:00 | |
| RE: keypad matrix // Michael | 01/01/70 00:00 | |
| RE: keypad matrix // Michael | 01/01/70 00:00 | |
| RE: keypad matrix // Michael | 01/01/70 00:00 | |
| RE: keypad matrix // Michael | 01/01/70 00:00 | |
| RE: keypad matrix // Rauf, | 01/01/70 00:00 | |
| RE: security | 01/01/70 00:00 | |
| RE: keypad matrix - one pin needed | 01/01/70 00:00 | |
| RE: security | 01/01/70 00:00 | |
| RE: Ultimate Security | 01/01/70 00:00 | |
RE: Ultimate Security | 01/01/70 00:00 |