Computer Mouse - one of the most inexpensive devices, so her choice is given quite a bit of attention: if only worked and was cheap.However, how comfortable and functional mouse depends convenience and speed of operation for the PC.How to choose a good computer mouse?
In principle all mouse devices can be divided into three groups: mechanical, optical and mechanical, optical.The earliest were mechanical mouse.Position the cursor in mechanical mouses determined by the rotation of the rubber ball, which is fixed between the two mutually perpendicular rollers.These rollers are responsible for the movement of the axes X and Y. The data from the rolls in mechanical mouses transferred to a copper contact system.
In optomechanical mouses contact copper system replaced the so-called optocoupler: i
Firstly, they very quickly accumulates dirt that disrupts the normal operation of the mouse.This leads to the fact that the mouse must be disassembled and cleaned.And secondly, the rubber ball in mechanical and opto-mechanical mouses often sinks, slips, which also results in the mouse into disrepair.
Optical computer mouse almost completely replaced their mechanical counterparts.The optical mouse work is carried out by the light emitter and receiver of the light signal.Light reflected from the surface on which the mouse is read by the receiver and computes the position of the cursor movement.
Due to the lack of mechanical friction parts optical mice have a significant advantage - they are more durable than mechanical.Moreover, the optical mouse can work on any surface (other than the mirror), it does not need a mouse pad.
sensitivity - one of the most important functional parameters of a computer mouse.Measured in dots per square inch (dpi).Optical mice have much higher sensitivity than mechanical, and in modern models can reach several thousand dots per inch (1000-4000 dpi).High sensitivity is often the most important to those who work with graphics, since the positioning accuracy for them is very important.
Another important parameter - it frequency , with which the mouse sends and processes the light signal.The higher the value, the higher the speed of the mouse.This option is especially important for gamers.
Computer mouse connected to a computer or via interface PS / 2 , either through USB .Separately allocated a wireless mouse.In this case, the mouse itself does not have any wires, and transmits a signal to connect to the computer via USB-port "base".Powered wireless mouse battery or batteries, and therefore much heavier than their wired counterparts.
following parameters such as functionality and ergonomics , highly individual.The functionality of the mouse depends on the availability of additional programmable buttons, a scroll wheel (to scroll).A standard mouse has two buttons and one scroll wheel often.Mice with three or more buttons are needed to solve specific problems.For example, 3D-games, work in AutoCAD, etc.
shape and size of the mouse body, and its weight determine the usability of a particular model.Is there a standard mouse symmetrical rounded shape, there are so-called anatomical mouse body which follows the curve of the hand.Anatomical mouse contribute to a more comfortable position of hands when working.
size mouse is chosen individually, depending on the size of your hands.Therefore, when buying a mouse be sure to hold it in your hand and see how it convenient.