Hanratty developed Design Automated by Computer (DAC), which is thought to be the first CAD system that involved interactive graphics. This was the first commercial CAD/CAM software system, and involved a numerical control programming tool named PRONTO, which he developed in 1957.
When was CAD invented?
The beginnings of CAD can be traced to the year 1957, when Dr. Patrick J. Hanratty developed PRONTO, the first commercial numerical-control programming system. In 1960, Ivan Sutherland MIT’s Lincoln Laboratory created SKETCHPAD, which demonstrated the basic principles and feasibility of computer technical drawing.
Why was CAD made?
The development of the sketchpad system revolutionized design because it made creating drawings and interactively moving and changing objects on a computer screen possible. The term CAD started to appear with the word ‘design’ because it went beyond basic drafting concepts.