HP HP-11C - Clearing Prefixes; One-Number Functions

Section 1: Getting Started 21
¢ To select the alternate function
printed in gold above the key,
first press the gold prefix key [f],
then press the function key; for
example: [f][#].
e To select the primary function
on the face of the key, press only
that key; for example: [CHS].
T & To select the alternate function
printed in blue on the slanted
face of the key, first press the
blue prefix key [g], then press
the function key; for example:
[9](aBS].
Notice that when you press the or
(9] prefix keys, the f or g annunciator
appears and remains in the display
until a function key is pressed to
complete the sequence.
0.0000
Clearing Prefixes
If you make a mistake while keying in a prefix for a function, press
CLEAR to cancel the error. (CLEAR also cancels
the [ST0], [RCL], [GTO], [GSB], [HYP], and keys.) Since the
key is also used to display the mantissa of a displayed
number, all ten digits of the number in the display will appear for a
moment after [PREFIX]is pressed (in Run mode only).
One-Number Functions
A one-number function is any numerical function that performs an
operation using only one number. To use any one-number function:
1. Keyin the number (if it is not already in the display).
2. Press the function key(s).
Keystrokes Display
45 45
[9])(Log) 1.6532