| Type ▼ | Name | Year ▼ | Publisher ▼ |
|---|---|---|---|
| HP-67 soft. |  Wheatstone Bridge | 197? | Hewlett-Packard |
| HP-67 soft. | Wire Table | 197? | Hewlett-Packard |
| HP-67 soft. | Wye <-> Delta Transformations | 197? | Hewlett-Packard |
| HP-67 soft. | Y-Delta Transform for L, R, C | 197? | Hewlett-Packard |