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Touch screens
A touch screen means you do not need to use a
mouse with a computer. You simply move your finger
across the screen and the mouse pointer moves with it.
To mouse click, then you tap on the screen instead. You
don't even need a keyboard with many systems, as a software
keyboard can be displayed on screen when a user needs to type in
information. Many touch screens also come with hand writing
recognition software so that your on screen writing can be
converted to text.
A computer mouse needs regular cleaning to prevent
it sticking and is easily damaged or stolen. Touch screens
and computers can easily be built into custom cases so that only
the screen can be seen. This makes touch screens ideal for
public places.
Touch screens can be used with both PC and Apple
Macintosh computers.
There are several different technologies available
that create touch screens for a variety of different uses:
LCD monitor touch screens
These are flat screen monitors that generally
range in size from 12" to 19" and either come with a
stand or wall mount brackets. Comparison
chart
Plasma screen touch screens
Plasma screens are generally larger ranging from
42". Many plasma screens can be supplied with
optional touch screen fronts and software, often called plasma
overlays. Comparison
chart
Interactive whiteboards
These are used alongside an LCD projector and
replace the usual projector screen. Generally used for
training as the teacher/trainer can touch the screen to control
the computer whilst at the front of a class. These screens
are generally 50" to 85" in size. Comparison
chart
Rear projection touch screens
Rear projection touch screens are effectively
another kind of interactive whiteboard and are used with an LCD
projector. Generally the whiteboard is mounted in a false
wall with the projector behind it to display the image. When
people are in front of the whiteboard, they see what appears to be
a huge monitor or television screen. The mouse is then again
controlled by touching the screen. Comparison
chart
FREE
LCD monitor guide
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