Every day of our computing life, we reach out for our mouse whenever we want to move our cursor or activate something. Our mouse senses our motion and our clicks and sends them to the computer so that it can respond appropriately. It is amazing how simple and effective a mouse is, and it is also amazing how long it took Mice to become a part of everyday life. Given that people naturally point at things ” usually before they speak ” it is surprising that it took so long for a good pointing device to develop. Although originally conceived in the 1960s, it took quite some time for mice to become mainstream. In the beginning there was no need to point because computers used crude interfaces like teletype machines or punch cards for data entry. The early text terminals did nothing more than emulate a teletype (using the screen to replace paper), so it was many years (well into the 1960s and early 1970s) before arrow keys were found on most terminals. Full screen editors were the first things to take real advantage of the cursor keys, and they offered humans the first crude way to point.

http://pptpdf.net/subcategory.php?categ=...-MOUSE.pdf

Please send me full seminar report on "optical mouse".[/size][/font]

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Please send me full seminar report on Optical Mouse .

sir
i need the report on optical mosue. i hope that you will send this as soon as possible.

Optical mouse
An optical mouse uses a light-emitting diode and photodiodes to detect movement relative to the underlying surface, rather than internal moving parts as does a mechanical mouse. the optical mouse actually uses a tiny camera to take 1,500 pictures every second. A small red red light-emitting diode (LED) is present in the mouse that emits the light which after reflection , falls onto a complimentary metal-oxide semiconductor (CMOS) sensor. This sensor sends this signal to a digital signal processor (DSP). The DSP is able to detect patterns in the images and see how those patterns have moved since the previous image. It thus determines determines how far the mouse has moved from the previous and thus determines the new co-ordinates. The smooth motion is achieved by doing this millions of times a second.

benefits
less wear and a lower chance of failure as there are less moving parts
-tracking sensors are present inside and as a result, does not get affected by dirt
-smoother response can be achieved by increased tracking resolution
-mouse pad is not required.

optical mouse sensor
used to implement a non- mechanical tracking engine for computer mice. It measures changes in position by optically acquiring sequential surface images and determining teh direction of movement mathematically.

for more details, see;
http://computer.howstuffworksquestion6311.htm
http://en.wikipediawiki/Mouse_%28computi...tical_mice
http://scribddoc/25351872/Optical-Mouse-Sensor

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[attachment=6674]
Optical Mouse

With advances it mouse technology, it appears that the venerable wheeled mouse is in danger of extinction. The now-preferred device for pointing and clicking is the optical mouse.


Able to work on almost any surface, the mouse has a small, red light-emitting diode (LED) that bounces light off that surface onto a complimentary metal-oxide semiconductor (CMOS) sensor. The CMOS sensor sends each image to a digital signal processor (DSP) for analysis. The DSP, operating at 18 MIPS (million instructions per second), is able to detect patterns in the images and see how those patterns have moved since the previous image. Based on the change in patterns over a sequence of images, the DSP determines how far the mouse has moved and sends the corresponding coordinates to the computer. The computer moves the cursor on the screen based on the coordinates received from the mouse. This happens hundreds of times each second, making the cursor appear to move very smoothly.

I want to download report on optical mouse

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sharon,
what you want on this topic?

RE: Optical Mouse (Download Seminar Report)

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full document.................

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[attachment=8980]
ABSTRACT
Topic –OPTICAL MOUSE
Every day of our computing life, we reach out for our mouse whenever we want to move our cursor or activate something. Our mouse senses our motion and our clicks and sends them to the computer so that it can respond appropriately. It is amazing how simple and effective a mouse is, and it is also amazing how long it took Mice to become a part of everyday life. Given that people naturally point at things -- usually before they speak -- it is surprising that it took so long for a good pointing device to develop. Although originally conceived in the 1960s, it took quite some time for mice to become mainstream. In the beginning there was no need to point because computers used crude interfaces like teletype machines or punch cards for data entry. The early text terminals did nothing more than emulate a teletype (using the screen to replace paper), so it was many years (well into the 1960s and early 1970s) before arrow keys were found on most terminals. Full screen editors were the first things to take real advantage of the cursor keys, and they offered humansthe first crude way to point.
In this paper on“ WORKING OF OPTICAL MOUSE “ I’ll take the cover off of
this important part of the human-machine interfaces and see exactly what makes it tick!
INTRODUCTION
Optical Technology uses an optical sensor to track movement, rather than the standard ball andmoving parts. Optical Technology provides increased control and precision and works on mostsurfaces. This superior technology translates into precise cursor movement and unmatchedresponsiveness.
It is amazing how simple and effective a mouse is, and it is also amazing how long it took mice tobecome a part of everyday life. Given that people naturally point at things -- usually before they
speak -- it is surprising that it took so long for a good pointing device to develop. Althoughoriginally conceived in the 1960s, it took quite some time for mice to become mainstream.In the beginning there was no need to point because computers used crude interfaces likeTeletype machines or punch cards for data entry before arrow keys were found on most terminals.
Full screen editors were the first things to take real advantage of the cursor keys, and they offeredhumans the first crude way to point.
Light pens were used on a variety of machines, as a pointing device for many years, and graphicstablets, joysticks and various other devices were also popular in the 1970s. None of these reallytook off as the pointing device of choice, however, when the mouse hit the scene, it was an
immediate success. There is something about it that is completely natural. Compared to agraphics tablet, mice are extremely inexpensive and they take up very little desk space. In the PCworld, mice took longer to gain ground, mainly because of a lack of support in the Operating
system. Once Windows 3.1 made Graphical User Interfaces (GUIs) a standard, the mouse becamethe PC-human interface of choice very quickly.
Mice first broke onto the public stage with the introduction of the Apple Macintosh in 1984, andsince then they have helped to completely redefine the way we use computers. Every day of ourcomputing life, we reach out for our mouse whenever we want to move our cursor or activate
something. Our mouse senses our motion and our clicks and sends them to the computer so it canrespond appropriately.

i need full seminar report on "optical mouse"