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I
ENTER
1
The
I
ENTER
1
key has several functions:
• When a running program prompts you for data, you respond by typing
the requested data and then pressing
I
ENTER
I.
This signals the program
that you have provided the data and that it can resume execution. The
I
EXEC
1
key can also be used for this function.
• When typing in lines of a program, the
I
ENTER
1
key is used to store each
line of program code. The []Eill key can also be used for this function.
• Like the
I
EXEC
1
key, the
I
ENTER
1
key can be used to execute commands
and calculations.
Type EDIT and press
I
ENTER
I.
Notice the number 10 now displayed on
the screen-this is the line number of the first line of a BASIC program ..
The computer is waiting for you to type in the line. Type:
!FIRST LINE
and press
I
ENTER
I.
Notice that the computer accepts the statement as
a program line and displays
20
in preparation for the next one. Press
I
PSE
I
to exit.
The
I
TAB
1
key moves the cursor forward to preset tabs. Pressing
I
SHIFT
~
I
TAB
1
moves the cursor back to preset tabs.
Before
I
TAB
1
can be used, a tab must be set. Press the space bar to move
the cursor forward a few spaces and press
I
SET T
I.
Move the cursor back
several spaces using
G,
then press
I
TAB
I.
Move the cursor forward
several more spaces with the space bar, then press
I
SHIFT
H
TAB
I.
To
clear the tab, move the cursor to the unwanted tab position and press
I
CLR T
I.
The
I
CTRL
1
(control) key works like
I
SH I FT
I
to access a set of standard
control characters, such as line-feed and form-feed. These characters
are useful to the programmer for controlling some devices and for
communicating with other computers. You probably won't need them
when running programs. The available control characters are listed in
the "Useful Tables" appendix of BASIC Language Reference.
HP 98203A Keyboards
9-3
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