Jef Raskin, the original manager of the Macintosh project at Apple will be meeting attendees at San Francisco's Macworld Expo next week.

Raskin launched the Macintosh project at Apple in 1979 and ran it until 1982, when Steve Jobs took over Apple's hardware and software development teams. He will be at the Expo for the debut of Matias Corporations Half Keyboard for the Mac.

Raskin said: "There is real value in being able to type with one hand. For any graphics-intensive project, such as CAD, image manipulation and animation tasks, the enhancement to productivity and ease of use by being able to keep one hand on the mouse and the other on the keyboard is remarkable."

Half life Edgar Matias, inventor of the Half Keyboard and self-confessed Macintosh fan, said: "It was a real honour and a privilege working with Jef on this product. He thought of the concept himself a few years ago, and mentioned it to his friend Bill Buxton. Coincidentally, Bill was my professor at the University of Toronto, and we had just finished a big research project evaluating the Half Keyboard design. Bill introduced us and suggested we work together."

The former head of publications and quality assurance at Apple, Raskin proposed the Macintosh project to Mike Markkula in 1979. The computer's architecture and design were influenced by Raskin's interests and experience as a researcher at Xerox PARC. Raskin developed the "Book of Macintosh", the seminal work in the history of the platform - which also predicted the future of Macs as network computers. At the time, the visionary Raskin said: "Telecommunications will become a key part of every computer market segment."