 The Mark III computer room at Dahlgren | |
| Also known as | ADEC (for Aiken Dahlgren Electronic Calculator) |
|---|---|
| Developer | Howard Aiken |
| Manufacturer | Harvard University |
| Release date | March 1950 |
| CPU | 5,000 vacuum tubes |
| Mass | 10 tons[1] |
| Predecessor | Harvard Mark II |
| Successor | Harvard Mark IV |
The Harvard Mark III, also known as ADEC (for Aiken Dahlgren Electronic Calculator) was an early computer that was partially electronic and partially electromechanical. It was built at Harvard University under the supervision of Howard Aiken for use at Naval Surface Warfare Center Dahlgren Division.