| ??? 01/21/06 08:16 Read: times |
#107962 - How Many Chars on Display? Responding to: ???'s previous message |
Asok Sankar Rudra said:
Dear Forum Members,
Be it alpha-numeric LCD or say 7 rows 48 colums LED dot matrix,I have probably a common problem.I can scroll relatively small messages quite good.But if the number of characters increases I fall short of RAM.I thought it to be normal and I was wrong.From market,a AT89C2051 and AT93C66 combination can display about 250 characters continuously.And my software(for AT89C2051 and AT24Cxx) zerks after about 90 characters because after that stack starts and I have to refresh the ram. Are you trying to load the entire message into RAM? You really only need enough RAM to hold all the characters that can be shown in the display at once. How many characters are there in your display? Some hardware details would help as well. Ian |
| Topic | Author | Date |
| Very long message multiplexing | 01/01/70 00:00 | |
| Speed? | 01/01/70 00:00 | |
| does not matter | 01/01/70 00:00 | |
| How Many Chars on Display? | 01/01/70 00:00 | |
| To Ian | 01/01/70 00:00 | |
| Hardware? | 01/01/70 00:00 | |
| Hardware,Ian | 01/01/70 00:00 | |
| Hardware | 01/01/70 00:00 | |
| When erik and oleg can spare time? | 01/01/70 00:00 | |
| Such impudence! | 01/01/70 00:00 | |
| exactly | 01/01/70 00:00 | |
| a circular buffer does not require data | 01/01/70 00:00 | |
indeed but | 01/01/70 00:00 | |
| circular buffer | 01/01/70 00:00 | |
| Really Dan I said experienced.. | 01/01/70 00:00 | |
| Are you the 1st one? | 01/01/70 00:00 | |
| by the way I have no experienceI | 01/01/70 00:00 |