Computer Mouse History
Our day to day life computer is very important device.Now touch screen is common to us,but we use desktop mouse is common to us.It is mainly using for pointing a perticular thing in desktop screen. The trackball, a related pointing device, was invented in 1946 by Ralph Benjamin as part of a post-World War II-era fire-control radar plotting system called Comprehensive Display System (CDS). Benjamin was then working for the British Royal Navy Scientific Service. Benjamin’s project used analog computers to calculate the future position of target aircraft based on several initial input points provided by a user with a joystick. Benjamin felt that a more elegant input device was needed and invented what they called a “roller ball” for this purpose.
The mouse was invented by Douglas Engelbart in 1964 and consisted of a wooden shell, circuit board and two metal wheels that came into contact with the surface it was being used on.
It was 8 years later in 1972 that Bill English developed the design further by inventing what is known as the “Ball Mouse” that we know today. The ball replaced the wheels and was capable of monitoring movement in any diection. The ball came into contact with two rollers that in turn spun wheels with graduations on them that could be turned into electrical pulses representing direction and speed.
Different ways of operating the mouse cause specific things to happen in the GUI:[
- Click: pressing and releasing a button.
- (left) Single-click: clicking the main button.
- (left) Double-click: clicking the button two times in quick succession counts as a different gesture than two separate single clicks.
- (left) Triple-click: clicking the button three times in quick succession counts as a different gesture than three separate single clicks. Triple clicks are far less common in traditional navigation.
- Right-click: clicking the secondary button, or clicking with two fingers. (This brings a menu with different options depending on the software)
- Middle-click: clicking the tertiary button.
- Drag and drop: pressing and holding a button, then moving the mouse without releasing. (Using the command “drag with the right mouse button” instead of just “drag” when one instructs a user to drag an object while holding the right mouse button down instead of the more commonly used left mouse button.)
- Mouse button chording (a.k.a. Rocker navigation).
- Combination of right-click then left-click.
- Combination of left-click then right-click or keyboard letter.
- Combination of left or right-click and the mouse wheel.
- Clicking while holding down a modifier key.
- Moving the pointer a long distance: When a practical limit of mouse movement is reached, one lifts up the mouse, brings it to the opposite edge of the working area while it is held above the surface, and then replaces it down onto the working surface. This is often not necessary, because acceleration software detects fast movement, and moves the pointer significantly faster in proportion than for slow mouse motion.
- Multi-touch: this method is similar to a multi-touch trackpad on a laptop with support for tap input for multiple fingers, the most famous example being the Apple Magic Mouse.