10.08.2015 Views

PASCAL Platinum 7th Edition

PASCAL Platinum 7th Edition - Pascal Education

PASCAL Platinum 7th Edition - Pascal Education

SHOW MORE
SHOW LESS
  • No tags were found...

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

ICTEvolution of the MouseMouse, is an input pointer device used on most computers, thatfunctions by detecting 2Dimensional movement from the surface itstands. Modern day mice consist of two buttons and one scroll wheel.Before the actual mouse was invented, computers used tracker ball aspointing devices. However, Douglas Engelbart in 1963 built theprototype of the mouse we know today, which had one button, awooden structure that moved on an X and Y axis only.In 1972, Bill English, invented the first ball mouse, which used a similartechnology to tracker balls. They had a ball on the bottom of the mouse,which would move with movement and the mechanisms inside woulddetect which way the ball is turning and move the pointer on the screen.Optical Mice were invented by Steve Kirsch of MIT and Mouse SystemsCorporation. The ball on the bottom was replaced by an infrared LEDand a four-quadrant infrared sensor to detect grid lines printed with infrared absorbing ink on aspecial metallic surface. However, Richard Francis Lyon invented a similar technology using a 16-pixelvisible-light image sensor, which could move on between the X, Y axis and therefore, stronger thanSteve Kirschs’.After technological progress, the old technology for opticalmice was replaced by an optoelectronic sensor (essentially,a tiny low-resolution video camera) to take successiveimages of the surface on which the mouse operates. Thistechnology increased as computing became cheaper andthe chips of optical Mice could be upgraded and making itpossible to detect movement on many surfaces.Via using infrared radiation, mice transfer the data to the computer, often using a USB Port, however,Bluetooth transmits have been invented to save the limited USB Ports and the mouse will still beusable after receiver is damaged.Nowadays, many Mice are specifically developed for games.Mostly developed for FPS games and famous MMORPG like Worldof Warcraft. Razor is one of the most successful gaming mice todate.Apple is has developed mice, with no buttons, but with touchsensors, that through the number of fingers and movements youuse, it makes the same and more functions than regular mice.Michalis Antoniou, 5A<strong>PASCAL</strong> <strong>Platinum</strong> <strong>7th</strong> <strong>Edition</strong> 31

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!