| ??? 08/21/05 12:07 Read: times |
#99769 - Logic levels Responding to: ???'s previous message |
Since there are leds involved, trying to recover logic levels from the led drive circuit may be a little more difficult. I suggest you calculate the voltages to be expected where you are sampling the 7segment. The display is most likely multiplexed - how do you decode the multiplexing? |
| Topic | Author | Date |
| 7 segent data bus tracker | 01/01/70 00:00 | |
| Logic levels | 01/01/70 00:00 | |
| Pull up P0 and use 4081 | 01/01/70 00:00 | |
| I don't think you understand the issue | 01/01/70 00:00 | |
| logic o | 01/01/70 00:00 | |
| required steps skipped | 01/01/70 00:00 | |
| analog voltages | 01/01/70 00:00 | |
Harald Erik | 01/01/70 00:00 |