Learn in the textbookPointing and Manual Input Devices
DefinitionA mouse (マウス) is a typical pointing device that moves the on-screen pointer according to the direction and distance you move its body across the desk.
ExplanationPressing a button on top, called a click, selects a target, and turning the wheel with a finger scrolls the screen up and down. Most mice today are optical: they shine light from the bottom and read changes in the desk surface pattern to detect movement.
AnalogyA tracing tool that copies your hand's movement on the desk onto the screen at a different scale.
Memory hookIts cord looks like a tail, making the device resemble a mouse; this is said to be where the name comes from.