Original Science Fair Digital Computer Kit instruction manual (Catalog No. 28-218, custom manufactured for Radio Shack, A Division of Tandy Corporation). Original box. What it actually taught — without naming it — was Boolean logic and combinatorial circuit design.
| Brand | Science Fair |
| Year | 1977 |
| Custom Bundle | Yes |
| Featured Refinements | Science Kit |
| MPN | 28-218 |
| Country Of Origin | United States |
| Character Family | Science |
Original Science Fair Digital Computer Kit instruction manual (Catalog No. 28-218, custom manufactured for Radio Shack, A Division of Tandy Corporation). Original box. What it actually taught — without naming it — was Boolean logic and combinatorial circuit design.