|
| Abatron |
| APF |
| Aristo |
| Bowmar |
| Brother |
| Busicom |
| Calcu-Pen |
| Canon |
| Casio |
| Citizen |
| Commodore |
| Craig |
| Decimo |
| Detson |
| Electronika |
| French Burroughs |
| Gillette |
| Hanimex |
| Hewlett Packard |
| Imperial |
| Invicta |
| Kingspoint |
| Laltex & Co. |
| Litronix |
| Lloyd's / Accumatic |
| Major Morgan |
| Melcor |
| MITS |
| National Semiconductor |
| Nixdorf |
| Novus |
| Omron |
| Panasonic |
| Planar |
| Prinztronic |
| Radio Shack |
| Radofin |
| Remington |
| Rockwell |
| Royal |
| Sharp |
| Silver Reed |
| Sinclair |
| Superlectron |
| Svetlana |
| Tabulex |
| Tamaya |
| Teal |
| Teknika General |
| Texet |
| Texas Instruments |
| Unimark |
| Unisonic |
| Vatman |
| Wang |