Ted Kaehler

Ted Kaehler (born 1950) is an American computer scientist known for his role in the development of several system methods. He is most noted for his contributions to the programming languages Smalltalk, Squeak, and Apple Computer's HyperCard system, and other technologies developed at Xerox PARC.

Background Kaehler is a son of a mechanical engineer and grew up tinkering with mechanical toys. During the 1960s, he built a computer on his own following an article published in Scientific American. He went to Gunn High School, a public school in Palo Alto, California. He graduated in 1968. The development has been touted as the first avatar-centric reference to this kind of VR technology.

Smalltalk Kaehler was part of a group led by Dr. Alan Kay who refined the concept of network computing through Smalltalk. This is a system that drew from John McCarthy's language LISP and from simulation programming language Simula, versions 1 and 67, which were developed by the Norwegian Computing Center. In Kay's account of Smalltalk's early development, he cited key milestones attributed to Kaehler. According to Kay, along with Ingalls, Dave Robson, and Diana Merry, for instance, Kaehler successfully implemented the Smalltalk-76 system from scratch within a period of seven months. It constituted 50 classes that composed 180 pages of source code. This system gave Smalltalk more speed, and the development of a system tracer used to clone Smalltalk-76 since the technology can write out new virtual memories from their prior iterations. future leader of the RISC-V movement.

Apple

In March 1985, Kaehler moved to Apple as a researcher. However, Kaehler was more noted for improving other technologies such as the company's HyperCard system from 1985 to 1987. This is a tool that allows users to create entertainment and instructional content. Kaehler added an interface that made it possible to control videodiscs.

Squeak Kaehler also became part of the open-source software community-supported Squeak Central Team in 1996, which also included Ingalls, John Maloney, Scott Wallace, and Andreas Raab. It was initially developed out of the Smalltalk-80 at Apple Research Laboratory and was later continued at Walt Disney Imagineering. Squeak was developed as an open and highly-portable language that is written fully in Smalltalk and included the EToys system, which allows children to see the software operation. The use of Smalltalk technology allows Squeak to be easier to debug, analyze, and change. Kaehler was credited for writing the code of the platform's painting system, Squeak Paintbox, and other EToys pilot versions.

Personal life In 1982, Kaehler wed Carol Nasby, who also worked at Apple for several years, wrote the first Macintosh Owners Guide, built the HyperCard Help System for version 1.0, and wrote the book HyperCard Power. In 1991, she died from complications of Type 1 diabetes.

In 1998, he wed his second wife Cynthia. She was a former preschool teacher for 25 years, and an artist who made fused glass pendants for necklaces and broaches. They lived in Las Vegas, Nevada and had three children. In 2020, she died from cancer.