Agilent Technologies 4294A, Руководство по программированию

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Chapter 11 155
Using HP Instrument BASIC
Keyboard
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BASIC
Numeric keys
The numeric keys are useful for entering numbers and operators. Simply typing an
expression in the command line and pressing the Enter key displays the result at the lower
left part of the screen.
[Enter]
This key works the same as the
[Enter]
key.
[0]
-
[9]
The numeric keys work the same as those on the front panel of the
4294A.
[Num Lock]
This key has no effect. Pressing this key turns LED on or off, but the
numeric keys can be used for entering numeric values only.
Edit keys
[Insert]
HP Instrument BASIC constantly runs in insert mode, so this key has
no effect.
[Shift]
+
[Insert]
Pressing the
[Insert]
key while holding down the
[Shift]
key inserts a
new line just over the cursor-positioned line (effective in edit mode
only).
[Delete]
Pressing this key deletes a single character over the cursor.
[Shift]
+
[Delete]
Pressing the
[Delete]
key while holding down the
[Shift]
key deletes
the cursor-positioned line (effective in edit mode only).
[End]
Pressing this key deletes the cursor-positioned line but leaves the line
number.
[Shift]
+
[End]
Pressing the
[End]
key while holding down the
[Shift]
key deletes
characters from the cursor position to the end of that line.
[Home]
This key clears the alpha screen. If you are in edit mode, this key exits
the edit mode.
Program control keys
Program control keys exert control over program execution.
[Pause/Break]
Pressing this key or pressing the
[F4]
key while holding down the
[Alt]
key temporarily stops program execution. If you carry out the key
operation
[System]
-
IBASIC
-
Continue
on the front panel of the
4294A, the temporary stop is canceled.
Pressing the
[F4]
key while holding down the
[Shift]
key and the
[Alt]
key together stops program execution. To resume executing the
program, carry out the key operation
[System]
-
IBASIC
-
Run
on the
front panel of the 4294A.
[Ctrl]
+
[Pause/Break]
Pressing the
[Pause/Break]
key while holding down the
[Ctrl]
key
resets program execution without erasing the program from memory
(BASIC RESET).
Pressing the
[F5]
key while holding down the
[Alt]
key temporarily
stops the execution of the program involved in I/O operation. If the
System hangs up during I/O operation, press the
[F5]
key while
holding down the
[Alt]
key instead of pressing the
[Pause/Break]
key