HP 4155A - Page 5

HP 4155A/4156A|At a Glance
Primary softkeys
Secondary softkeys
LINE switch
Flexible disk drive
Keyb oard interface
Rotary
knob
LINE switch You use the LINE switch to apply electric power
.
Flexible disk drive You can use 3.5-inch diskette as the mass storage
,
which is inserted in this exible disk drive.
Keyboard interface You can control the HP 4155A/4156A from keyboard,
which is connected to the keyboard interface, as well
as from the front-panel keys.
Primary softkeys You use primary softkeys to move pages and to change
the secondary softkey menu.
Secondary softkeys You use secondary softkeys to select variable names,
alternatives, and changing items.
Rotary knob You use rotary knob to change the setting value and to
move a marker.
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