Commodore 64 User Manual page 27

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SHIFT AND SHIFT LOCK KEYS
You already know what happens when you
hold down one of the SHIFT keys while
pressing a key with two symbols on its top
face: the computer performs the function
printed on the top half of the key. The SHIFT
LOCK key works exactly the same way, except
that it locks any other key you press in part
nership with the SHIFT function until you press
the SHIFT LOCK key again. In this way, you
do not have to keep holding down a SHIFT
key when you plan to use a lot of keys with
the SHIFT function. In the next few exercises,
you will use a SHIFT key or the SHIFT LOCK
key in combination with the letter keys to dis
play the graphics symbol on the right side of
each key.
USING SHIFT
The letter S key has a picture of a heart on its
right-hand side. To place this picture on the
screen, hold down either SHIFT key and press
the letter S now. A heart appears.
SCREEN 1
Now, hold down a SHIFT key and press the
letters A, Z, and X. The graphics symbols of a
spade, diamond, and club appear on the
screen next to the heart.
SCREEN 2
USING SHIFT LOCK
To display the other right-hand graphics sym
bols on the letter keys, first press the SHIFT
LOCK key to lock the SHIFT function into
action. Then, press each of the letter keys,
beginning with the top row. Press only the let
ters for now, and press each letter only once.
Watch as many different symbols appear.
SCREEN 3
When you are finished, unlock the SHIFT func
tion by pressing the SHIFT LOCK key again.
Do not clear the screen and do not turn off
the computer before going on to the next
exercise.
.WEIR T VU I OPfiS
SCREEN 1
In the Graphics Mode, pressing a SHIFT key
with the letter S key displays a heart.
SCREEN 2
SHIFT plus a letter key displays the graphics
symbol on the right-hand side of the key.
OWER 1 VU
SCREEN 3
Pressing the SHIFT LOCK key locks the
SHIFT function In place.
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SHIFT LOCK key • SHIFT key • SHIFT key
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