mouse

The standard name of the "mouse" should be "mouse" and the English name "Mouse". It has been 38 years old since its appearance. The use of the mouse is to make the operation of the computer easier, instead of the cumbersome instructions of the keyboard.

The type of mouse interface : The mouse can be divided into serial mouse, PS/2 mouse and bus mouse by interface type. The serial mouse is connected to the computer through the serial port. There are 9-pin and 25-pin interfaces. The PS/2 mouse is connected to the computer through a six-pin mini DIN interface. It is very similar to the keyboard interface. The bus mouse interface is on the bus interface card.

The working principle of the mouse: The mouse can be divided into a mechanical mouse and an optical mouse according to different working principles. The mechanical mouse is mainly composed of a roller ball, a roller column and a grating signal sensor. When you drag the mouse, the ball rotates. The ball rotates the roller. The photoelectric pulse signal generated by the grating signal sensor at the end of the roller reflects the vertical and horizontal displacement of the mouse, and then passes through the computer. Program processing and conversion to control the movement of cursor arrows on the screen. An optical mouse detects the displacement of a mouse and converts the displacement signal into an electrical pulse signal. Then, the cursor is controlled by the processing and conversion of the program to control the movement of the cursor arrow on the screen. Photoelectric sensors used photoelectric sensors instead of rolling balls. This type of sensor requires a specially designed backing plate with a striped or dotted pattern.

In addition, the mouse can also be divided into two key mouse, three-button mouse, roller mouse and sensor mouse , two-button mouse and three-button mouse left and right buttons function exactly the same, under normal circumstances, we do not need the middle of the three-button mouse Buttons, but when using certain special software (such as AutoCAD, etc.), this button will also play some role; roller mouse and sensor mouse are commonly used on laptop computers, turn the small ball in the middle of the mouse in different directions, Or move the finger on the sensor board, the cursor will move in the corresponding direction, when the cursor reaches the predetermined position, click the mouse or sensor board, you can perform the corresponding function.

Wireless mouse and 3D mouse : Newly appeared wireless mouse and 3D vibrating mouse are relatively novel mouse. Wireless mice are produced to accommodate large-screen displays. The so-called "wireless", that is no wire connection, but the use of two batteries on the 7th wireless remote control, the mouse has an automatic sleep function, the battery can be used in the previous year, the receiving range of less than 1.8 meters. The 3D vibration mouse is a new type of mouse. It can be used not only as an ordinary mouse but also has the following features: (1) It has full three-dimensional control capability. It has six directions of front, back, left, right, top and bottom, and can be combined with the front right, bottom left, etc. (2) The shape is different from a normal mouse. It consists of a fan-shaped base and an active controller. (3) With vibration function, tactile feedback function. When playing certain games, when you are hit by an enemy, you will feel that your mouse is also vibrating. (4) is a true three-button mouse. In both DOS and Windows environments, the middle and right mouse buttons are used.