| |
| | STMsubtypes-pt1 |
 | | Using warps and wefts of different colours gave you hundreds of coloured pixels per minute, from which you built up your desired pattern, but it was slow and monotonous work, and subject, again, to operator error. |
 | | Swade explains how the Swedish engineer Georg Scheutz, having read of Babbage's undertaking in 1834, and understanding the basic principles, was inspired to produce his own design for a difference engine. |
 | | Scheutz, however, kept it simple, so that when the plans and prototypes were ready in 1837, he was able to set his 15-year old son Edvard to work at putting it together. |
| www.smithsrisca.demon.co.uk /STMsubtypes-pt1.html (11696 words) |
|