<Li> Mobile computers <Ul> <Li> Mobile Internet devices </Li> <Li> Tablets / Smartphones </Li> <Li> Laptops </Li> <Li> Wearable computers <Ul> <Li> Calculator watches </Li> <Li> Smartwatches </Li> <Li> Head - mounted displays </Li> </Ul> </Li> <Li> Personal digital assistants </Li> <Li> Enterprise digital assistants </Li> <Li> Graphing calculators </Li> <Li> Handheld game consoles </Li> <Li> Portable media players </Li> <Li> Calculators </Li> <Li> Ultra-mobile PCs </Li> <Li> Digital media player </Li> </Ul> </Li> <Ul> <Li> Mobile Internet devices </Li> <Li> Tablets / Smartphones </Li> <Li> Laptops </Li> <Li> Wearable computers <Ul> <Li> Calculator watches </Li> <Li> Smartwatches </Li> <Li> Head - mounted displays </Li> </Ul> </Li> <Li> Personal digital assistants </Li> <Li> Enterprise digital assistants </Li> <Li> Graphing calculators </Li> <Li> Handheld game consoles </Li> <Li> Portable media players </Li> <Li> Calculators </Li> <Li> Ultra-mobile PCs </Li> <Li> Digital media player </Li> </Ul> <Li> Mobile Internet devices </Li> <Li> Tablets / Smartphones </Li>

A touch screen is classified as a special type of scanning device