File:DATAR-Trackball.jpg
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Prototype of trackball invented in 1952 to be used as an interface to the DATAR, the Naval tactical system developed for the Royal Canadian Navy in the early 1950s.DATAR was the first time digital computers and communications were tested as naval tactical systems.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 15:25, 1 September 2009 | | 1,000 × 791 (426 KB) | J.vardalas (talk | contribs) | Prototype of trackball invented in 1952 to be used as an interface to the DATAR, the Naval tactical system developed for the Royal Canadian Navy in the early 1950s.DATAR was the first time digital computers and communications were tested as naval tactical |
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