|
|
|
|
|
|
|
 |
 |
 |
23.5 SEQUENTIAL LOGIC CIRCUITS
23.5.1 Latches and Seal-in
Latches are one function built into PLCs, but there are variations.
Basically, latches allow one or more values to be frozen in time.
This circuit is a seal-in because the output locks the inputs on. After power is removed the logic will default to off.
23.5.2 Shift Registers
These allow values to be put into a `pipe-line' where values are shifted through one at a time.
| |
|
|
Search for More: |
Custom Search
|
|