HP 30b - Business Professional Calculator User Manual page 13

• The primary function is printed on the top of the key.
• The secondary function is printed on the bevel of the key. To activate the secondary function of a key,
press and release
• The third, or tertiary functions are printed above specific keys on the keyboard. To activate the
tertiary function of a key, press and hold
function. Release both keys.
Tertiary function:
(press SHIFT and
the function key
simultaneously)
In this manual, key symbols of the commands are provided throughout the manual so you can
follow along with the examples.
• The primary functions are represented by the key symbol with the primary function.
• The secondary key functions are represented by the shift key symbol,
with the secondary function. For example, to execute sine, press
portion of the key is highlighted, while the
of the key that will be activated in a given command.
• Commands with a tertiary function are represented by the shift key symbol,
term (HOLD), followed by the key with the tertiary function. For example, to activate the Black-Scholes
feature shown above, press
:
When is active, the down arrow annunciator appears on screen, indicating that the
next key pressed will execute the secondary function of the key. To cancel an accidental press
:
of , simply press
Key commands for example problems are provided throughout the text and in tables. Key
symbols are placed in the order they are to be pressed, from left to right.
* Does not apply to the HP 20b.
:
followed by the key with the secondary function printed on the bevel.
:
Black S
B
Figure 2 Primary, Secondary, and Tertiary Key Functions
:
(HOLD)
:
a second time.
and simultaneously press the key below the printed
Primary
Function
Shifted
(secondary)
Function
:p
7
is grayed out. This highlighting focuses on the function
B
*
.
:
, followed by the key
SIN
. Note how the
:
, followed by the
Basic Features
5