| ??? 06/19/03 07:06 Read: times |
#48788 - RE: Negative Logic Responding to: ???'s previous message |
I believe that initially the ttl ( cmos) logic was such that it could not differentiat between 1 and high impedance so to enale a chip the negative logic was used. even you can see in address decoders like ls138 and such the output was negative ligic so this must have continued and the result that today most of the micros and memories are negative logic enabled |
| Topic | Author | Date |
| Negative Logic | 01/01/70 00:00 | |
| RE: Negative Logic | 01/01/70 00:00 | |
| RE: Negative Logic | 01/01/70 00:00 | |
| RE: Negative Logic | 01/01/70 00:00 | |
| RE: Negative Logic | 01/01/70 00:00 | |
| RE: Negative Logic | 01/01/70 00:00 | |
| RE: Negative Logic | 01/01/70 00:00 | |
| RE: Negative Logic | 01/01/70 00:00 | |
| RE: Negative Logic | 01/01/70 00:00 | |
| RE: Negative Logic | 01/01/70 00:00 | |
| RE: Negative Logic | 01/01/70 00:00 | |
| RE: Negative Logic | 01/01/70 00:00 | |
| RE: Negative Logic while on the subject | 01/01/70 00:00 | |
| RE: Negative Logic while on the subject | 01/01/70 00:00 | |
| control lines | 01/01/70 00:00 | |
| RE: Negative Logic | 01/01/70 00:00 | |
| RE: Negative Logic | 01/01/70 00:00 | |
| RE: Negative Logic | 01/01/70 00:00 | |
| RE: Negative Logic | 01/01/70 00:00 | |
| RE: Negative Logic | 01/01/70 00:00 | |
| RE: Negative Logic | 01/01/70 00:00 | |
| RE: Negative Logic | 01/01/70 00:00 | |
| forgot something | 01/01/70 00:00 | |
| RE: forgot something | 01/01/70 00:00 | |
Ye can\'nae break the laws o\' physics | 01/01/70 00:00 |