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"I'm strictly an ivory-tower person. I can explain things but I can't do things."
- Isaac Asimov
 |
| Drafting Dan | ||
| The first computer software drafting program (Computer Aided Design - CAD). |
This is the first mention of a computer software drafting program, like AutoCAD and the many other drafting packages available today.
| I knew that they were using powered semi-automatic drafting machines now... You could put straight lines or curves anywhere on an easel just by punching keys. |
| From The Door Into Summer,
by Robert Heinlein. Published by Unknown in 1956 Additional resources -
|
This novel was published in 1956, which I believe was before the use of computers in drafting. In the mid-1950's the US Air Force developed SAGE (Semi Automatic Ground Environment) for air defense; it provided one key component; a cathode ray tube to show computer-processed information (in this case, radar and other data). The first true CAD (Computer Aided Design) systems emerged in the 1960's; the first was The Electronic Drafting Machine, which used PDP-1 computer from DEC (Digital Equipment Corp., a vector-refresh display and a disk memory device used to refresh the graphic display. An electronic light pen was used to input commands.
I spent some time working with PDGS (Product Design Graphics System), Ford Motor Company's home-grown CAD program. PDGS started with a few FORTRAN programs to calculate specific parameters for subsystems (like suspension designs); by the 1990's it had grown to a full-fledged system with (reputedly) 10,000 sub-menus full of features.
(Special thanks to Bill Mullins for pointing this one out.)
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