HLTH 107 Lecture Notes - Lecture 12: Ibm Selectric Typewriter, Human Musculoskeletal System, Hand Tool
Document Summary
Occupaional biomechanics is a science concerned with the mechanical behaviour of the musculoskeletal system and component issues when physical work is performed. Textbook topics: lower back, hand tool design, seated work and chair design, cumulaive trauma disorders (ctds) Originally developed by sewing machine manufactures, such as remington, 1867. Removed possibility of jams, but kept key layout the same. Hobby market expected easy input, manufactures such as apple, commodore, radio shack introduced keyboards for input. Haven"t changed much since, but computers have: Have changed much since, but computers have: Using a mouse and keyboard requires you to use the same, exact movement over and over again, causing small muscles in hand to become ired and overworked.