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 Scanning Patterns
Demo:
Scanning Patterns
Start the demo
by clicking with your mouse on "Start" then
control the switch by clicking on the "Switch" button.
In this scanning demo above, you should explore the different scanning
patterns, the different ways in which the cursor can move on the display:
Linear scanning:
The demo begins in "linear scanning" where the cursor moves
from one item to the next through the entire set.
Row-Column scanning:
Click on "Row-Column" scanning. You can see how the cursor
highlights one row at a time, until you activate the switch. Then it
activates each item (each column) as progresses. When you activate the
switch a second time, you will select the letter that is highlighted
at that moment.
Group-Row-Item
scanning. Click on "Group" scanning. You can see that
the cursor highlights the top and bottom halves of the selection set,
until you activate the switch. Then it highlights each row in that half
of the display until you activate the switch. Then it highlights each
individual item until selection.
Circular scanning: This type of scanning cannot be viewed via
this web tool but it is easy to imagine. It is scanning on a circular
display, where the cursor sweeps around the display much like the "second
hand" of a clock.
You are finished with this scanning lab.
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