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System Operations - HP -28S Manual

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25
System Operations
This chapter describes special key combinations that interrupt normal
HP-28S operation. These system operations include printing the dis-
play, adjusting display contrast, halting programs, resetting memory,
and performing diagnostic tests.
All system operations begin by pressing the
ION I
key. You can cancel
any system operation by pressing
I DEL I
before you release
ION I.
The table below shows the keystrokes for system operations, followed
by a description of each.
System Operations
Name
Print Display
Contrast Control
Attention
System Halt
Memory Reset
Repeating Test
Keyboard Test
Cancel System Operation
Keystrokes
IONIW
IONI~
or
IONIG
IONI
ION
1m
IONI~[E
IONlw
ION)I NEXT I
ION)I DEL I
25: System Operations
215

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