Using the microcontroller's analog reference-voltage output and ratiometric analog-to- digital conversion ensures correct encoding of the keypad
| Authors | Stefano Salvatori |
| Main Document | Article «Two-wire, four-by-four-key keyboard interface saves power» |
| Description | Figure 2 |
| File Format / Size | PDF / 21 Kb |
| Document Language | English |
Other Materials from the Main Document
- Article «Two-wire, four-by-four-key keyboard interface saves power»
- Figure 1. A two-wire resistive voltage-divider interface encodes a four-row-by- four-column keypad
- Figure 2. Using the microcontroller's analog reference-voltage output and ratiometric analog-to- digital conversion ensures correct encoding of the keypad
