"সকলের তরে সকলে আমরা, প্রত্যেকে মোরা পরের তরে", "এ্যান্টি ব্লগারদের ঘৃণা করুন", "দাঁতভাঙ্গা জবাব দেন", "অশ্লীল মন্তব্যকারীর বিরুদ্ধে প্রতিবাদ ও প্রতিরোধ গড়ে তুলুন", "প্রয়োজনে তাদেরকে ব্লক করুন"

A mouse is a handheld pointing device for computers. A small object fitted with one or more buttons and shaped to sit naturally under the hand. The underside of the mouse houses a device that detects the mouse’s motion relative to the flat surface on which it sits. It is called a mouse primarily because the cord on early models resembled the rodent’s tail, and also because the motion of the pointer on the screen can be mouse like. History of mouse engineering: The mouse was invented by Douglas Engel Bart of Stanford Research Institute in 1963 after extensive usability testing. The first mouse was bulky, and used two gear wheels perpendicular to each other: the rotation of each wheel was translated into motion along one axis in the plane. Variation on the mouse, invented in the early 1790s by Bill English at Xerox PARC, replaced the external wheels with a single ball which could rotate in any direction. Modern computer mice took shape under the inspiration of Professor Jean-Daniel Nicoud and the hands of engineer and watchmaker Andre Guignard. Optical Mouse: In a separate line of evolution, the optical mouse detected movement using an optical sensor on its underside, paired with a light-emitting diode to illuminate the surface. Modern surface-independent optical mouse work by using a sensor to take successive pictures of the surface the mouse is operating on. Changes between one frame and the next are processed by the image processing part of the chip and translated into movement on the two axes. Demand for advances in optical mouse technology comes in large part from competitive FPS gamers. Who prefer more accurate mouse for more accurate aiming. Laser Mouse: In 2004, Logitech introduced the laser mouse. This mouse utilizes a small laser instead of the normal LED found in other optical mouse. The new technology can increase the detail of the image taken by the mouse. The companies claim that this leads to a 20x increase in accuracy compared to conventional optical mouse. Optical versus Mechanical Mouse: Optical mouse supporters claim they work better than mechanical mouse, require no maintenance and last longer due to fewer moving parts. Mechanical mouse supporters, on the other hand, claim glossy and transparent surfaces make optical mouse fail. Mouse with less imagine processing power also have problems power also have problems tracking extremely fast movement, though high-end mouse track at 40 inches per second and faster. Also, maintenance on a broken mechanical mouse is much simpler, usually just a simple cleaning. Opt mechanical mouse optically detects movements of the ball, whereas optical mouse detects movement of the surface. Ref: Youth ………., Dated …………….