
Definitions
High = more positive
Low = less positive
Indicator and Qualifier Symbols
| 
 | OR function | 
| 
 | Polarity indicator, shown outside logic symbol. Any marked input or output is active low; any unmarked | 
| 
 | input or output is active high. | 
| 
 | (Dynamic indicator) Any market input is  | 
| 
 | unmarked input is level sensitive. | 
| 
 | (Schmitt trigger) indicates that hysteresis exists in device. | 
| 
 | |
| 
 | |
| 
 | Monostable  | 
| t = xSec | Indicates pulse width usually determined by external RC network. | 
| G | Gate input (a number following G indicates which inputs are gated) | 
| C | Control input (clock) | 
RReset (clear)
SSet
| OLD SYMBOL | NEW SYMBOL | NOTES | 
Output requires external components to achieve logic state
A 
Output changes state rapidly regardless of input rate of change.