A considerable amount of work was required to make the TX-2 operate in interactive mode with a large CRT screen. For example, the graphical user interface GUI was derived from the Sketchpad as well as modern object oriented programming. His father, a Ph. Since the conditions can involve anything computable, Sketchpad can be used for a very wide range of problems. Sketchpad drawings are stored in the computer in a specially designed “ring” structure. We welcome suggested improvements to any of our articles.

Sketchpad stores explicit information about the topology of a drawing. The clever way the program organized its geometric data pioneered the use of “master” “objects” and “occurrences” “instances” in computing and pointed forward to object oriented programming. You can make it easier for us to review and, hopefully, publish your contribution by keeping a few points in mind. A man-machine graphical communication system “. Part 1 Part 2 , YouTube.

Retrieved 1 March The realistic images viewed and manipulated in electronic games and computer…. Sketchpad’s most incredible breakthroughs were in the way that it allowed the user to interact with the computer: Numerical control NC virtual-reality technology In sutherand reality: The conditions themselves are displayed on the drawing so that they may be erased or changed with the light pen language.

Ivan Sutherland demonstrated with it that computer graphics could be used for both artistic and technical purposes in addition to showing a novel method of human-computer interaction.

Possibly of even greater significance and sadly almost ignored in the CAD software market in the 40 years since Ivan Sutherland published his thesis, Sketchpad proved that computers can be used not just for engineering and repetitive drafting but can be used interactively by designers and potentially artists in the concept creation and innovation stage of a product’s lifecycle. Computer, device for processing, storing, and displaying information. Sketchpad proved beyond doubt that computers could automate repetitive design and drafting tasks with a reliability and sutherlanc not possible by manual methods.


CAD software – history of CAD CAM

Sutherland received the Turing Award from the Association for Computing Machinery in for suthsrland invention of Sketchpad. It is easy to add entirely new types of conditions to Sketchpad’s vocabulary.

If the user moves a symbol, all lines attached to that symbol will automatically move to stay attached to it. Computer once meant a person who…. Remember when hookers all hovering around the tunnel as you were exiting the city.

It sketchpda a tribute to Sketchpad’s uniqueness that it defined a GUI Graphical User Interface more than 20 years before the term was first used.

sutherland sketchpad thesis

The Sketchpad uses drawing as a novel communication medium for a computer. Internet URLs are the best. For example, to make two lines parallel, he successively points to the lines with the light pen and presses thezis button.

Sketchpad – Wikipedia

A set of push buttons controls the changes to be made such as “erase”, “move”, etc. Any combination of conditions can be defined as a composite condition and applied in one step.

If the user changed the master drawing, all the instances would change as well. We welcome suggested improvements to any of our articles.


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She immigrated to the United States with her family in and His first computer experience was with the famous computer Simon of Edmund Berkeley. Since Sketchpad is able to accept topological information from a human being in a picture language perfectly natural to the human, it can be used as an input program for computation programs which require topological data, e.

Ivan and his brother Bert even met Berkeley and were inspired thesid envision new avenues for programming. When this system was connected to a computer, it enabled designers to study drawings interactively and facilitated the modification of their designs. Thank you for your feedback. It differed from most contemporary computers, in that it was designed to test human-computer interaction.

sutherland sketchpad thesis

Any change in the definition of a symbol is at once seen wherever that symbol appears. Sketchpad was an innovative system developed in by Ivan Sutherland as part of his PhD thesis.

Massachusetts Institute of Technology. This program was a great accomplishment, it was the longest program ever written for Simon, a total of eight pages of paper tape. Various computer switches controlled aspects of the graphics such as size and ratio.