| ??? 07/01/03 18:49 Read: times |
#49805 - RE: Simple Digital Clock ---89C2051 Responding to: ???'s previous message |
Stanley,
Software calibration is the way to go. All it requires is to measure the clock that you have built against a known standard ( in America we have NIST via the telephone) for an extended time, let's say 10 hours. Time factor = Standard time (NIST time)in sec/Clock time in sec The Time factor is your correction factor. Corrected Time = Time factor * Clock Time Erik is correct, the crystal will still be susceptible to temperature variations. But if the clock is always on these temperature variations should be minimized. Jacob |
| Topic | Author | Date |
| Simple Digital Clock ---89C2051 | 01/01/70 00:00 | |
| RE: Simple Digital Clock ---89C2051 | 01/01/70 00:00 | |
| RE: Simple Digital Clock ---89C2051 | 01/01/70 00:00 | |
RE: Simple Digital Clock ---89C2051 | 01/01/70 00:00 | |
| RE: Simple Digital Clock ---89C2051 | 01/01/70 00:00 | |
| RE: Simple Digital Clock ---89C2051 | 01/01/70 00:00 | |
| RE: Simple Digital Clock ---89C2051 | 01/01/70 00:00 | |
| RE: Simple Digital Clock ---89C2051 | 01/01/70 00:00 | |
| RE: Simple Digital Clock ---89C2051 | 01/01/70 00:00 | |
| RE: Simple Digital Clock ---89C2051 | 01/01/70 00:00 | |
| RE: Simple Digital Clock ---89C2051 | 01/01/70 00:00 | |
| RE: Simple Digital Clock ---89C2051 | 01/01/70 00:00 | |
| RE: Simple Digital Clock ---89C2051 | 01/01/70 00:00 | |
| Here comes the oscillator bible | 01/01/70 00:00 | |
| RE: Here comes the oscillator bible | 01/01/70 00:00 | |
| Thanks, Michael | 01/01/70 00:00 | |
| RE: Here comes the oscillator bible | 01/01/70 00:00 |