With the introduction of the Apple Macintosh in 1984, mice also broke into the public market stage and since then, they changed completely how people use computers and their purposes. You use your mouse every day when you work, play or surf the net on you computer and it responds to the movements and clicks that you make so that you may work properly. It is very interesting how effective and simple the computer mouse really is and how long from the apparition of the computer devices became a part of the computer everyday life.

It is surprising it took so long because of the natural feature of people for pointing before speaking. Firstly conceived in the 1960, the mouse became a indispensable part of the computer many years later. Using crude interfaces like punch cards for data entry or teletype machines; there was no need at the beginning for computers to have a pointing device. Using the screen to replace the paper, the first text terminals emulated a teletype so it will be many years after this, almost ten, before an arrow key will be found in many terminals. The first thing to take advantage was the full screen editors of the cursor key thus they have offered people the first pointing device.

On a variety of machines, light pens were also used for graphics tablets, pointing devices, joy sticks and many other devices that were also popular in the 1970s for many years to come. However none of these devices really could took the place of the future mouse and when it hit the market it had an instant success. It is completely natural and very inexpensive when you compare them to a graphics table, taking also very little desk space. Because of the lack of support, mice took longer to gain ground in the computer area but once Windows made a Graphical User Interfaces, GUIs a main standard, mice became people's choice everywhere.

Every mouse's goal is to translate the movement from your hand into signals to the computer so you may perform tasks on it. When you think of the mouse and how a computer mouse works you must take into consideration the tracking ball inside the mouse that will touch the desktop and will roll when you will move the mouse.

Inside the mouse there will be two rollers that will touch the ball and one of the rollers will be oriented so that it will detect motion in the x direction and the other roller is 90 degrees oriented from the first ball so that it will detect motion in the y direction. These rollers rotate when the ball rotates as well, each of them being connected to a shaft that will spin a disk with many holes in it. When the roller will role its shaft and disk will spin. An infrared sensor and an infrared LED will be on both sides of the disk, the holes from the disk breaking the light coming from the LED so that the sensor will see pulses of light. The distance that will travel for the rate of pulsing will be directly related to the speed of the mouse.

The majority of mice today use a USB connector to attach them to the computer this being a very standard way to connect many devices nowadays. You must acknowledge the importance of the mouse in you computer system and also that there are many models on the market for ergonomic use.