Saturday, November 12, 2011

When Was The Laser Computer Mouse Introduced?

Laser computer mouse

The computer mouse has undergone a lot of changes and improvements since the first mouse was created in 1964 by Douglas Englebart of Stanford University. The design has been improved, made more accurate, and made much more ergonomic for daily use. The role of the computer mouse has also evolved from simply moving a cursor on the screen to now controlling almost all operations on your computer.

The graphical user interface was introduced in the computer world in the late 1980s. After that computer companies realized the fact that users were forced to use only the keyboards and most of them wished another device to ease their interaction with the computer. The mouse was introduced and became a quick success; we cannot imagine a computer now without a computer mouse on the side. I don't know if there are any users who work only with the keyboard, although it is technically possible to utilize keyboard shortcuts to replace the mouse. However, using a mouse is quicker and easier. First there was the traditional roller mouse, that was ok for its time, but it had a lot of inconveniences: the ball got dirty and sticky very often and the cursor movement was not very smooth and accurate. Then there was the optical mouse, much better than the ball one, but still lacking some features.

The latest upgrade to the computer mouse is the introduction of a laser instead of the LED light source of the optical mouse; this is the laser computer mouse. The laser mouse is the most sensitive mouse available invented so far. A laser mouse is a type of computer device that uses a laser beam rather than a ball to track the movement of the cursor. Laser mice are becoming increasingly common because they have better tracking ability. Plus, they do not stick to the mouse pad or get dirty and do not distort the signal as conventional ball mice did. They lack moving parts so they are far less subject to damage.

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The laser mouse uses less power and is able to detect even the smallest movements of the user. Big computer companies such as Logitech and Microsoft saw the great demand of laser mice, especially coming from avid gamers and visual artists, so they are now producing this kind of computer mouse on a large scale. The new sensitivity of the laser mouse is an improvement you have to pay for, often double that for a standard optical mouse and 4 times the price of a mechanical mouse.
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In 1998, Sun Microsystems provided a laser mouse with their Sun SPARCstation servers and workstations. However, laser mice invaded the market only starting with 2004, when Logitech, in partnership with Agilent Technologies, introduced its MX 1000 laser mouse. This mouse has significantly increased the resolution of the image taken by it. When it comes to surface tracking power the laser mouse is 20 times more efficient compared to conventional optical mice, because of their interference effects.

Glass laser mouse

Glass laser (or glaser) mice is a variety of a laser mouse but can also be used on top of mirror or transparent glass with few problems.

In August 2009, Logitech introduced mice with two lasers, to track on glass and glossy surfaces better; they called them "dark field" mice. But let's see if there is any difference between an optical mouse and a laser mouse. Both types removed the ball and rollers first used on analog mice. However, both of them are very efficient, the preference for one or another is only a matter of taste, of personal preference. An optical mouse usually uses a LED which is frequently red, but sometimes you can also see blue LED mice. An optical mouse is a computer mouse that uses a digital technology of image processing to track the position of your cursor on the screen. In fact, an optical mouse includes a tiny camera that is able to take up to 1,500 pictures per second. One of the main advantages of optical mice is that they don't need a mouse pad to work. They will work even if the surface is not entirely flat, but still some models don't work on black or shiny surfaces.
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Both laser and optical mice transform the motion of your hand into digital signals sent to your computer and used to determine the position of the cursor. The main difference between laser mice and optical mice is the type of light which is used to represent movement on the computer screen. Because a laser mouse contains a small laser inside, it is obviously more expensive than an optical mouse.

The laser mouse, on the other hand, is a type of optical mouse, but it is somehow different because it uses a laser beam which is invisible, or nearly invisible, for the human eye. The beam emitted by the laser mouse moves when the user's hand moves and it triggers an optical sensor system. It works at the same time with a system that tracks the position of the mouse, how far it moved and constantly updates its position and consequently determines the position of the cursor on the screen.

Generally the laser mouse moves very smoothly and accurately. Plus, it doesn't need a mouse pad, because it can reflect from almost everything, thus a dream come true for the users.
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Generally, an optical mouse can track between 400 and 800 dpi. In comparison, a laser mouse can often track more than 2,000 dpi. This makes a laser mouse much more precise and accurate in comparison with an optical mouse. The laser mouse has added sensitivity that is why it is preferred by gamers and professional graphic designers, but the typical computer users might find this feature distracting when performing simple actions like sending an email or surfing the Internet.

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