Computer mouse

3-Tasten-Maus Microsoft

A computer mouse, black and white, retouched, keyboard visible in background

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[[File:_SRI_Computer_Mouse.jpg._The_usage_is_not_equivalent_to_the_free_image,_as_it_illustrates_the_technical_details_and_size_of_the_device._-->[[|SRI Computer Mouse. The usage is not equivalent to the free image, as it illustrates the technical details and size of the device. -->thumb Computer mouse is a handheld pointing device that detects two-dimensional motion relative to a surface. This motion is typically translated into the motion of a pointer on a display, which allows for fine control of a graphical user interface (GUI).

History

The concept of the computer mouse was first conceived by Douglas Engelbart in the 1960s as part of a larger project aimed at augmenting human intellect. Engelbart's original mouse was a wooden shell with two metal wheels that made contact with the surface it was being used on. This invention was publicly demonstrated for the first time in 1968, in what is now referred to as "The Mother of All Demos."

Design and Function

Modern computer mice vary in design but typically include a body designed to fit under one hand, one or more buttons, and a scroll wheel. Mice may connect to a computer via a USB port or wirelessly via Bluetooth or a proprietary wireless technology. The two main types of mouse sensors are optical and laser, both of which use light to detect movement across a surface.

Optical Mouse

An optical mouse uses a light-emitting diode (LED) and a camera to track the movement of the mouse by taking thousands of pictures per second of the surface under the mouse. The mouse's onboard processor then analyzes these images to determine the direction and speed of the mouse's movement.

Laser Mouse

Laser mice use a laser light source instead of an LED to illuminate the surface under the mouse. This allows for more precise tracking on a wider variety of surfaces, including glass.

Usage

The primary function of a computer mouse is to allow the user to interact with the graphical elements of a computer's operating system or software applications. Clicking, dragging, and scrolling are the basic actions performed with a mouse, each enabling specific responses from the computer. For example, double-clicking an icon may open a program, while dragging an object may move it to a different location on the screen.

Types of Mice

In addition to the standard two-button scroll-wheel mouse, there are several other types of mice, each designed for specific uses. These include:

• Ergonomic mouse: Designed to reduce muscle strain and discomfort.
• Gaming mouse: Often features a high DPI (dots per inch) rating for precise tracking and additional buttons for in-game commands.
• Trackball mouse: Has a stationary ball that the user rotates to move the cursor, useful for users with limited desk space.
• Vertical mouse: Encourages a more natural hand position, reducing wrist strain.

Impact

The invention and widespread adoption of the computer mouse have had a profound impact on how individuals interact with computers. It has made technology more accessible to a broader audience by simplifying the user interface and has become an essential tool for both personal and professional computer use.

Future

With the advent of touchscreens and advances in virtual reality (VR) and augmented reality (AR) technologies, the role of the computer mouse is evolving. However, its precision and ease of use keep it relevant in many contexts, particularly where fine control is required, such as graphic design and gaming.