The Shift Key; The Input Key - HP 30b - Business Professional Calculator Quick Start Manual

• To specify the primary function on the upperface of the key, press the
key alone.
• To specify the shifted function printed in blue on the lower face of the
key, press and release the
key.
• To specify the function printed above a key, press and hold
simultaneously

The Shift Key

Pressing the shift key,
at the top of the display. If you press
key, the shift annunciator turns off. There are a total of 12 annunciators.
When displayed, each signifies the status of the calculator in certain opera-
tions. When applicable, the descriptions below identify when an indicator
appears on screen.
In this manual, the highlighted portion of the key symbol, or symbols, repre-
sents the active function of the key. Unless otherwise indicated, press and
release the desired key, or key combination in order from left to right. You do
not need to press and hold the keys unless you require the Black-Scholes Cal-
culation menu (Black S). Secondary, or shifted functions, are preceded by the
shift key symbol,

The Input Key

I
The Input key,
menu items.
I
The key is also used in Reverse Polish Notation (RPN) mode to enter
2 Getting Started
:
press the key below the printed function.
:
, turns on a status indicator called an annunciator
:
.
, is used to input values for variables and execute
key, followed by the desired function
:
once again, or press a function
:
and