What is a mouse

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What is a mouse?
A mouse is a handheld device that controls the
movement of the cursor (or pointer) on the
monitor or any display screen. It has one or more
buttons which have different functions depending
on what program is running it is shaped to sit
naturally under the hand. By moving the mouse on
a smooth surface such as a desk, the user
controls an on-screen cursor. As you move the
mouse, the pointer moves in the same direction.
Some newer mice also have a scroll wheel which is
used for scrolling through long documents
(easier).
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Why was it called a mouse?
It was called a mouse because the cord on early
models resembled, the rodents tail.
The motion of the pointer when the
mouse is moved, can also be mouse-like.
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How important is the mouse?

• Invented by Douglas Engelbart, the mouse
  considered to be one of the great breakthroughs
  in computer ergonomics. Before the mouse, they
  only typed in text-based commands, or to use the
  arrow keys to guide a cursor down the menu and
  hit the return key. After the invention of the
  computer mouse, it freed the user to a large
  extent from using the keyboard. In particular,
  the mouse is also useful for graphics programs
  that allow you to draw pictures by using the
  mouse like a pen, pencil or paintbrush.

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Basic features of the mouse
The basic features of a
mouse are a casing with a
flat bottom, designed to be

gripped by one hand,
the button/s at the top, a
multidirectional detection device (usually a
ball) on the bottom and a cable connecting the
mouse.
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Three basic types of mice
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Mechanical mouse
Mechanical mouse it has either a rubber or
metal ball on its underside that can roll in all
directions. The mechanical sensors within the
mouse detect the direction the ball is rolling
and move the pointer on the screen accordingly.
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Optomechanical mouse
Optomechanical mouse is the same as a
mechanical mouse, but instead, it uses optical
sensors to detect the motion of the ball.
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Optical mouse
Optical mouse uses a laser to detect the
movement of the mouse. The mouse must be moved
along a special mat with a grid so that the
optical mechanism has a frame of reference.
These types of mice have no mechanical moving
parts. They respond more quickly and precisely
than the other two types, and they are also more
expensive.
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There are other types of mice such as
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Parts of the mouse

• As the roller begins to rotate, so does the
  chopper/gear. The gear has small notches within
  it or around the edges of it, as it rotates light
  shines through the openings which are then
  detected by the two light sensors which then
  send the computer a
  signal of that movement.
  

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Parts of the mouse

• The offset of the light received by the two light
  sensors determines the direction of each axis.

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Do this when your computer is off.
How to clean your mouse

• Twist the plastic ring holding the ball in the
  direction indicated. There should be at least one
  arrow, but if there isnt any, it is generally
  counter clockwise, and turn the mouse over.

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How to clean your mouse

• 2. Remove the ball. Put it someplace where it
  won't pick up extra dirt. (The ball tends to stay
  clean even when everything else is dirty, but
  double-check.)
• 3. Remove hair, dust or lint by lightly pressing
  office tape to it and quickly pulling the tape
  off.
• 4.Very gently scrape the dirt off with tweezers
  or a similar object. Take care not to damage the
  fine wires surrounding the rollers.

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How to clean your mouse
Angle the mouse so that dirt won't fall
deeper into it once it is scraped off. You can
tap the mouse right side up on a flat surface
occasionally to knock out any dirt accumulated
out of reach. When done, 5. Simply replace the
ball and slide the plastic piece back into place.
!!! Before testing your mouse, make sure that
your mouse pad is clean and on a flat surface
!!!
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! REVENGE !
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