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X. NEW INSTRUMENTS OF THOUGHT
The Scanner, a bridge between two worlds
This admirable tool facilitates the transition from the
analog to the digital world. We will always have physical
objects that we would like to digitize, transform, reproduce
or transport over networks: So far this can only be done
with two-dimensional objects (perhaps some time in the
future it will be possible with digitized physical objects).
Scanners are very popular with graphic designers, and become
simpler almost daily. They will surely be indispensable in
digital schools, where they are already replacing
photocopiers. They come in various forms:
Desktop scanners are the traditional format, looking like
thin photocopiers, and enable the transfer of any
two-dimensional object (usually printed on paper) to a
computer or a screen. These are the most accurate, largest
capacity and most commonly used machines by professionals in
graphic design.
Hand-held scanners are of two types, those which can
sweep the width of a page and others (the size of a pencil)
which scan by line of text (as if they were
highlighting).
Automatic scanners have a slit for the insertion of the
page or leaflet to be digitized, which is immediately
reproduced on our computer screens. These scanners are
permanently connected to the computer and are activated
automatically by means of the insertion of a sheet and are
ideal for loading information on a computer, creating a data
or document base quickly and easily. They also make it
possible to radiate this information immediately over the
network.
These three types of scanner are well complemented by
optical character recognition systems that read scanned text
on a letter-by-letter basis so it can be edited on any word
processor. All these elements in their various forms,
qualities and uses are fundamental to digital education, in
particular during this period of transition when we are
still overwhelmed by paper. It would be best however to
abandon paper altogether if at all possible (saving
trees).

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