What kind of device is a mouse?

The mouse is an external computer input device and an indicator for positioning the vertical and horizontal coordinates of the computer display system. It is named after its shape like a mouse; the mouse can position the cursor on the current screen and use buttons and wheel devices to position the cursor. Operate on the screen element at the position passed by the cursor.

#The mouse is an external input device for the computer.

The mouse is an external input device for the computer. It is also an indicator for positioning the vertical and horizontal coordinates of the computer display system. It is named after its shape like a mouse (called mouse in Hong Kong and Taiwan). Its standard name should be "mouse", and its English name is "Mouse". The use of the mouse is to make computer operation easier and faster, replacing the cumbersome instructions of the keyboard.

The mouse was invented in 1964 by Douglas Engelbart, a Ph.D. at the University of California, Berkeley, who was working at the Stanford Research Institute (SRI), a research institute sponsored by Stanford University. Institution, Douglas Engelbart has long been considering how to make computer operation easier and what means to use to replace the cumbersome instructions entered by the keyboard. The name when applying for the patent was the display system X-Y position indicator.

Working Principle

Rolling ball mouse: The rubber ball is transmitted to the chip pulse signal sensor of the grating wheel with light-emitting diodes and photosensitive transistors.

Optical mouse: A light source pulse signal sensor with a light-emitting semiconductor and a photoelectric sensor that irradiates particles with infrared scattered light spots.

Wireless mouse: Use DRF technology to convert the mouse movement on the X or Y axis, button press or lift information into wireless signals and send them to the host.

The mouse is a very commonly used computer input device. It can position the cursor on the current screen and operate the screen elements at the location passed by the cursor through buttons and wheel devices. The originator of the mouse appeared in 1968, when American scientist Douglas Englebart made the first mouse in California.

Mouses are divided into mechanical mice and optical mice according to their different working principles. The mechanical mouse is mainly composed of a rolling ball, a roller and a grating signal sensor. When you drag the mouse, the rolling ball is driven to rotate, and the rolling ball in turn drives the roller to rotate. The grating signal sensor installed at the end of the roller collects the grating signal. The photoelectric pulse signal generated by the sensor reflects the displacement changes of the mouse in the vertical and horizontal directions, and is then processed and converted by the computer program to control the movement of the cursor arrow on the screen.

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