| Компонент | Описание | Производитель | |
| DM74LS163AM | Synchronous 4-Bit Binary Counters |
National Semiconductor |
|
| DM74LS163AM | Synchronous 4-Bit Binary Counters |
Fairchild Semiconductor |
|
| DM74LS163AMX | Synchronous 4-Bit Binary Counter with Synchronous Clear |
Fairchild Semiconductor |