Touchscreens are common in devices such as?smartphones,?handheld game consoles, and?personal computers. They are common in?point-of-sale?(POS) systems,?automated teller machines?(ATMs), and?electronic voting machines. They can also be attached to computers or, as terminals, to networks. They play a prominent role in the design of digital appliances such as?personal digital assistants?(PDAs) and some?e-readers. Touchscreens are important in educational settings such as classrooms or on college campuses.