RD Laboratories
Publisher Information
| Name | RD Laboratories |
| Address | 5 Kennedy Road, Dane End, Ware, Hertfordshire SG12 0LU |
| Notes |
List of MIA ZX81 Hardware (4)
| # | Description | #Ref | First mention | Link |
|---|---|---|---|---|
| 1 | Light pen (RD 8180) | 1 | Sinclair User 2 | [full page] |
| 2 | Micro-mum (RD8100) | 2 | Sinclair User 2 | [full page] |
| 3 | Mini-mum | 1 | Sinclair User 1 | [full page] |
| 4 | Super-mum | 1 | Sinclair User 1 | [full page] |
