HP HP-28S User Manual

Numerical Constants (Flag 35 Clear). Evaluation of a symbolic
constant returns its numerical value.
Results Mode
The current Result mode affects the result of evaluating a function
when its arguments are symbolic.
Symbolic Results (Flag 36 Set). Given symbolic arguments, func-
tions
return symbolic results.
Numerical Results (Flag 36 Clear). Functions always return nu-
merical results. To do so, functions evaluate symbolic arguments
repeatedly to determine their numerical values. Evaluation of a sym-
bolic constant returns its numerical value regardless of Constants
Mode.
Entry and Display Modes
These modes affect how objects are entered and displayed.
Entry Mode
The current entry mode affects the result when you press a command,
function, or User menu key. The entry mode automatically changes
when you press C], .~, or 0; you can also change it manually by
pressing [gJ. The appearance of the cursor indicates the current entry
mode. For details, see chapter 18, "The Command Line.'"
Immediate Entry (Open Cursor). The command line is executed
when you press a command, function, or User menu key.
Algebraic Entry (Partly Filled Cursor). The command line is exe-
cuted when you press a command key.
Alpha Entry (Solid Cursor, a). The command line is executed only
when you press I ENTER I.
24: Modes 207

HP HP-28S Specifications

General

Brand	HP
Model	HP-28S
Category	Calculator
Language	English