| ??? 10/02/05 23:30 Read: times |
#101833 - schmitt trigger Responding to: ???'s previous message |
I always used a schmitt trigger IC and connected it to the port. I don't remember what the number was, but I thought there used to be a 74000 series IC which had 8 inputs and 8 outputs with a straight-thru configuration which could source up to 20ma per trigger.. Does anyone know the name or number of this chip? |
| Topic | Author | Date |
| 8051 port problem | 01/01/70 00:00 | |
| Which port? | 01/01/70 00:00 | |
| Port current | 01/01/70 00:00 | |
| 8051 port problem | 01/01/70 00:00 | |
| Just look at this: | 01/01/70 00:00 | |
| NPN? | 01/01/70 00:00 | |
| schmitt trigger | 01/01/70 00:00 | |
I guess you are referring to the hex | 01/01/70 00:00 | |
| Have you tried BLINK? | 01/01/70 00:00 | |
| checked the MCBx51 board | 01/01/70 00:00 | |
| Connect as shown | 01/01/70 00:00 | |
| Led problem | 01/01/70 00:00 |