DataHand Professional II, Руководство пользователя

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SECTION 5
L E A R N I N G T O U S E T H E H A N D U N I T S
22
User's Guide
,
Version 1.7.5
,
November 21, 2002
Mo v i ng Yo ur Th um b s to Pr e s s the Ke y s
Your right thumb should be able to move freely east, west, southwest, and
straight down to its well key and up to its direct access key. Your left thumb
should be able to move freely east, southeast, west, straight down to its well
key and up to its direct access key.
Light pressure down
Hard pressure
down
West East
S
outhwest
Right Thumb
East West
Southeast
Left Thumb
Up Up
Figure 7. Thumb Motions
The well keys directly beneath the thumbs actually have two
positions:
♦
Pressing the left thumb lightly activates SHIFT . Hard down
pressure activates the second position, CAP LOCK , and the
lock light over the left thumb goes on; the next cycle of hard
down pressure will deactivate
CAP LOCK and the lock light will
go out.
♦
Pressing the right thumb lightly activates NAS SHIFT . Hard
down pressure activates the second position, NAS LOCK , and
the lock light over the right thumb goes on; the next cycle of hard
down pressure will deactivate
NAS LOCK and the lock light will
go out.
The keys above the thumbs are called the direct access keys. You
activate these keys by lifting up the thumbs. The use of these keys
is explained in the next section
Three Modes of Operation .