THE
CONTROL
KEY
Thekey marked
CTRL,
to the leftofthe spacebar,
is
the
CONTROL
key
it
works
like
the
FUNCTION
key—you holditdown with another keyon the
keyboard
and
the
combination tells
the
com
puterto do something special.Butthe control
functions
are
not
indicated
on
the
keyboard
because they change.
You'll
only use control
functions with special software programs,
and
the specific software program
will
provide in
structions for
their
use
(and usually a
handy
reference card to tellyou which keys do what).
THE
NUMBER
KEYS
Thenumber keysinthe top row operate a little
differentlyfrom the letter keys.There are no up
percasenumbers. Instead, each numberkey
contains
two
characters.
One
(in
the
lowercase
position)
isa
number,
and the other
(in
the up
percase
position)
isa
symbol
ofsomesort.
You
type the number keyaloneto produce the num
ber on
the
screen.
To
produce the symbol
that
is
above
the
number,you hold the
SHIFT
key and
type
the
number
key.
Remember
how
this
works?
Hold
the
SHIFT
key
down, and type the number keys fromone
through nineand then zero.
Your
screen
will
showthe symbolson the upper part of the keys.
SCREEN
1
Beforestarting the next exercise,press
ENTER,
type the words
CALL
CLEAR,
and press
ENTER
again
to
clear
the
screen.
81
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