When was the computer mouse invented?

Mouse, also translated as mouse, is a commonly used computer input device, which can locate the cursor on the current screen. And operates the screen element at the position where the cursor passes through the key and the wheel device. The ancestor of the mouse appeared in 1968. American scientist douglas engelbart made the first mouse in California. Milestone of mouse development: * 1968, the embryonic form of mouse was born; O1968 65438+On February 9th, the world's first mouse was born in Stanford University. Its inventor is Dr. douglas engelbart. This mouse is designed to replace the tedious instructions on the keyboard with a mouse.

Thereby making the operation of the computer easier. The shape of this mouse is a small wooden box, and its working principle is that the ball at the bottom drives the pivot to rotate, and then drives the rheostat to change the resistance to generate displacement signals, which are transmitted to the computer host. * 198 1 year, the first commercial mouse was born * 1983, Logitech invented the first optical mechanical mouse, which is what we call the mechanical mouse today. This mouse structure became the de facto industry standard * 1980s, and the first generation of optical mouse appeared, with higher accuracy than mechanical mouse. But it must work on a special photoelectric mouse board with a fine grid. The high cost of this mouse limits its application * 1999, Aeilent.

Later, it was reorganized into Anhuagao.

Avago) released IntelliEye optical engine, and then optical mouse without special mouse board appeared in the market, and the popularity of optical mouse began. * In 2003, Logitech and pp Microsoft respectively launched Bluetooth mouse with Bluetooth micro-communication protocol * In 2005, Logitech and Anhuagao jointly launched the first laser mouse (wireless

Taxable

Logitech MX1000) * In 2006, the first wired laser mouse to overcome the glass barrier came out (Dexin

ML45) * 2006, the Bluetooth laser mouse came out (Acrox) [Editor] The technical working principle of mechanical mouse 1: move the mouse to drive the ball. 2: Turn the lever in X direction and Y direction to transmit mouse movement. 3: Optical dial. 4: The infrared ray emitted by the transistor can pass through the small hole of the dial. 5. The optical sensor receives infrared rays and converts them into plane moving speed. Mechanical mouse 1 working principle: move the mouse to drive the ball. 2: Turn the lever in X direction and Y direction to transmit mouse movement. 3: Optical dial. 4: The infrared ray emitted by the transistor can pass through the small hole of the dial. 5. The optical sensor receives infrared rays and converts them into plane moving speed. [Edit] Classification * Mechanical mouse * Optical mechanical mouse * Optical mouse * Laser mouse [Edit] Number of buttons * Single button mouse: Single button, which has disappeared on PC for a long time. At present, some Mac systems use * double button mouse: double button mouse, which has disappeared from PC for a long time. At present, some Mac systems use * pc mouse: left and right keys plus middle mouse. The PC has disappeared for a long time * Three-button scrolling mouse: left and right buttons plus middle button, and the scroll wheel contains middle button function. Mainstream mouse after Windows 95 * five-button scrolling mouse: the fourth and fifth buttons are added, and the main function is to browse the previous page/next page when browsing the network, which can be edited by the driver. * Multi-button scrolling mouse: With more than five buttons, the Bluetooth mouse is designed for certain functions/environments. Bluetooth mouse. * AT interface * RS232 * PS/2 * USB * infrared * 27mhz RF (radio frequency) * 40/49mhz RF (radio frequency) * 3 15/433mhz RF (radio frequency) * 2.4GHz RF (radio frequency) * Bluetooth] Function distinction * Standard mouse: General standard 3. Office mouse: a mouse with office/Web-related functions or shortcut keys added to the software and hardware * Demonstration mouse: dedicated mouse * Game mouse: specially designed for special gamers, which can withstand strong operation and special games. Software and hardware design are needed to [edit] the texture and accuracy of the mouse cursor, and it also depends on the relationship between the sensor (wheel or optical sensor) and the holding part. Usually, the sensor is later than the holding part. A poorly designed mouse can't guide users to use the mouse in a more comfortable way, or the accuracy of the pointer is not good and it is easy to make mistakes. The surface of the mouse is often coated with a layer of paint or other substances, mostly just for beauty, and sometimes to stop sliding. These surface substances on the mouse are easy to fall off due to frequent friction when operating the mouse; It was beautiful at first, but it was surprisingly ugly after falling. In terms of buttons, some mice will make a loud click sound, and the buttons are hard and difficult to press; Some voices are small and the buttons are soft. A wheel is similar to a key, and a loose wheel will feel muddy and watery when rolling. In addition, some mice will add metal blocks to increase the weight of the mouse, in order to imitate the wheel mouse that is gradually eliminated. But this will increase the burden that can be reduced. Each button of the mouse usually uses the same component, but the frequency of each button can be very different. As a result, the whole mouse is often replaced because one button is broken (usually the left mouse button or the wheel). The operability of the mouse is related to the user's habits in Dachuan, and the use of the mouse itself needs some adaptation; Appearance and texture, etc. , also depends on the user's preferences. [Editor] Major brands * Microsoft * Logitech (English: Logitech) * BenQ (English: Benq) * Razer (English: Razer)

Reference: Wikipedia