DM54LS181 и другие
| Компонент | Описание | Производитель | |
| DM54LS181 | 4-Bit Arithmetic Logic Unit |
National Semiconductor |
 |
| DM54LS181J | 4-Bit Arithmetic Logic Unit |
National Semiconductor |
|
| DM54LS181W | 4-Bit Arithmetic Logic Unit |
National Semiconductor |
|