Dulmont Magnum
The Dulmont Magnum is an early laptop computer designed initially by Australian power line equipment manufacturer Dulmison Pty Ltd and subsequently marketed by Dulmont Pty Ltd. Exhibited in September 1983, it was the world's first true battery-powered laptop computer.
Dulmont Magnum | |
| Also known as | Kookaburra |
|---|---|
| Developer | Dulmison Pty Ltd |
| Manufacturer | Dulmont Electronic Systems Pty Ltd |
| Type | Portable computer |
| Release date | September 26, 1983 (Australia) 1983 (International) |
| Discontinued | 1986 |
| Operating system | MS-DOS 2.11 |
| CPU | 8-MHz Intel 80186 |
| Memory | 96KB-384KB RAM, 128KB-384KB ROM |
| Storage | Optionally External Dual 5.25" floppy disk drives, or an external 10 MB hard drive |
| Removable storage | Dual 128K ROM cartridge slots |
| Display | 8 lines, 80 characters LCD screen (1982–1983) 16 lines, 80 characters LCD screen (1984–1985 international release) 25 lines, 80 characters LCD screen (1985-6 final version) Earlier versions were able to be upgraded to the larger displays. |
| Input | 76-key Keyboard |
| Power | Battery External mains power |
| Dimensions | 32 x 27.5 x 5.5cm |
| Mass | 4.8kg |
Dulmont was a joint venture between Dulmison and an Australian subsidiary of their electrical utility customer the Belgian National Electricity Authority, Tramont Ltd.: 285–6 The Magnum was sold from 1983 to 1986. The company found itself undercapitalized as it sought to enter the international market and faced increased competition from other laptops. It was taken over twice, with Dulmont eventually taken over in 1984 by Time Office Computers (Manufacturing) Pty. Ltd.
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