His objective was to introduce a computer that could be purchased at a reasonable price. These computers had an easy to use interface, were graphically strong and user friendly. To accomplish that, he hired the people, designed and developed more softwares, designed different interfaces. His project named it as Macintosh Project, it is also called as Macintosh, because McIntosh is his favorite kind of apple. In his carrier in Apple, he worked under Steve Jobs, later on, he reported to Tom Whitney. Jef was the 31st employee at Apple Computer. Jef Raskin became the Manager of Publications at Apple, in January 1978. After it, for small period, Raskin continued as the New Product Reviewer, Director of Publications, and handled the packaging issues.
Raskin worked on quantification, navigation, ergonomics, and evaluation. He created a user interface design. He also wrote a book, named The Humane Interface: New Directions for Designing Systems, which was published in 2000. He described different suggestions for the interface design. The theme introduced a new and better planning structure for programmers. He also recommended some changes to pertaining interface design, publicly. Jef defined some rules and declared a concept of Modeless-ness. It states that by giving a same input, the computer produces a different output, thats by the changing state. For example; the caps lock key in keyboard. Jef discuss the concepts of Quasimodo, according to it, a user can perform a different action by applying a physical action to change the state. A good example of Quasimodo is the keyboards shift key. That concept is described in his book, as well. Jef Raskin declared the monotony of design. He designed a rule, by which every action is suppose to be undoable. Even it is applicable when any application or document has been closed and then reopened. He introduced the idea of elimination of warning alerts on the screen.