| Компонент | Описание | Производитель | |
| 54F191LCQB | Up/Down Binary Counter with Preset and Ripple Clock |
National Semiconductor |
|
| 54F191LCX | Up/Down Binary Counter with Preset and Ripple Clock |
National Semiconductor |
|
| 74F191LCQB | Up/Down Binary Counter with Preset and Ripple Clock |
National Semiconductor |
|
| 74F191LCX | Up/Down Binary Counter with Preset and Ripple Clock |
National Semiconductor |