| ??? 02/20/10 11:52 Read: times |
#173341 - Oh, I see - that's not "binary" at all! Responding to: ???'s previous message |
Chico Magalhães said:
I have seen somewhere some time ago a "binary" clock, it was really not a real binary. No, it's not "binary" by any stretch of the imagination - it is completely inappropriate to describe it as such! Each digit (0 to 9) of time was shown in a 3x3 LED matrix, so 9 LEDs for each digit.
The real number was shown in this 3x3 by summing the number of lit LEDs, 3 LEDs lit = number 3 But this 3x3 is filled randomly, so to make a 1, the only 1 lit LED could be any of the 9 LEDs, same goes to other numbers. Oh, I think I see now: '0' is represented by having no LEDs illuminated; '1' is represented by having one LED - any LED - illuminated; '2' is represented by having two LEDs - any two LEDs - illuminated; '3' is represented by having three LEDs - any three LEDs - illuminated; : : '9' is represented by having 9 LEDs - all nine LEDs - illuminated. Some idea to replicate this 3x3 random filling in 8051s? Nothing specific to the 8051 here. The two basic things you need to do are: A. Decide how many LEDs are to be lit; B. A "random" (sic?) number generator to choose the LEDs to light. That can be done generically in 'C' - independent of any particular processor. |
| Topic | Author | Date |
| "binary" clock | 01/01/70 00:00 | |
| You mean one of these? (should be a doddle) | 01/01/70 00:00 | |
| No... not this one | 01/01/70 00:00 | |
| Oh, I see - that's not "binary" at all! | 01/01/70 00:00 | |
| Yes! Thats it! | 01/01/70 00:00 | |
| World's most unreadable clock? | 01/01/70 00:00 | |
random permutations | 01/01/70 00:00 |