DM74LS90MX и другие
| Компонент | Описание | Производитель | |
| DM74LS90M | Decade and Binary Counters |
Fairchild Semiconductor |
 |
| DM74LS90M | Decade and Binary Counters |
National Semiconductor |
|
| DM74LS90MX | Decade and Binary Counter |
Fairchild Semiconductor |
|