Friday, August 26, 2011
Pocket Computers - 1851
No. 6. Pocket Computer, 4 inches in diameter, with Time, Calendar, and Compass cards.
(Source: Fuller's complete and perpetual calendar: comprising a complete and comprehensive set of calendar pages for every year from 1724, o.s., to 1900, n.s - Lee and Shepard, 1871)
Fuller's Pocket Computer actually dates back to 1851, and can be found in the Official descriptive and illustrated Catalogue of the great Exhibition of the Works of Industry of all Nations: 1851, Volume 5