HP 48GII User Manual

Full Command and Function Reference 3-43
Specifying 0 for x
key
clears all user key assignments and restores the standard key assignments.
Specifying S as the argument for DELKEYS suppresses all standard key assignments on the user
keyboard. This makes keys without user key assignments inactive on the user keyboard. (You can
make exceptions using ASN, or restore them all using STOKEYS.) If you are stuck in User
mode – probably with a “locked” keyboard – because you have reassigned or suppressed the
keys necessary to cancel User mode, do a system halt (“warm start”): press and hold ‡ and
C simultaneously, releasing C first. This cancels User mode. Deleted user key assignments
still take up from 2.5 to 62.5 bytes of memory each. You can free this memory by packing your
user key assignments by executing RCLKEYS 0 DELKEYS STOKEYS.
Access: !&H
KEYS DELKEYS
!°L MODES KEYS DELKEYS ( °is the left-shift of the Nkey).
Flags: User-Mode Lock (–61) and User Mode (–62) affect the status of the user keyboard.
Input/Output:
Level 1/Argument 1 Level 1/Item 1
x
key
→
{ x
key1
, ... ,x
key n
}
→
0
→
'S'
→
See also: ASN, RCLKEYS, STOKEYS
DEPND
Type: Command
Description: Dependent Variable Command: Specifies the dependent variable (and its plotting range for
TRUTH plots).
The specification for the dependent variable name and its plotting range is stored in the reserved
variable PPAR as follows:
• If the argument is a global variable name, that name replaces the dependent variable entry in
PPAR.
• If the argument is a list containing a global name, that name replaces the dependent variable
name but leaves unchanged any existing plotting range.
• If the argument is a list containing a global name and two real numbers, or a list containing a
name, array, and real number, that list replaces the dependent variable entry.
• If the argument is a list containing two real numbers, or two real numbers from levels 1 and 2,
those two numbers specify a new plotting range, leaving the dependent variable name
unchanged. (LASTARG returns a list, even if the two numbers were entered separately.)
The default entry is Y.
The plotting range for the dependent variable is meaningful only for plot type TRUTH, where it
restricts the region for which the equation is tested, and for plot type DIFFEQ, where it specifies
the initial solution value and absolute error tolerance.
Access: …µ
DEPND
Input/Output:
Level 2/Argument 1 Level 1/Argument 2 Level 1/Item 1
'global'
→
{ global }
→
{ global, y
start
, y
end
}
→
{y
start
, y
end
}
→
y
start
y
end
→

HP 48GII Specifications

General

Battery type	CR2032
Type	Scientific
Form factor	Pocket

Weight and Dimensions

Weight	220 g
Dimensions (WxDxH)	184 x 87 x 23.5 mm

Summary

RPL Programming

Understanding Programs

Programs as objects, delimiters, and basic structure.

Entering and Executing Programs

Details on how to create, store, and run programs.

Using Conditional Structures

Covers IF, CASE, IFT, IFTE structures for program decision-making.

Input and Output Commands

Details commands like PROMPT, INPUT, INFORM, CHOOSE for user interaction.

RPL Programming Examples

Fibonacci Numbers

Demonstrates recursive and loop-based Fibonacci calculations.

Minimum and Maximum Array Elements

Details finding min/max elements using MNX and MNX2.

Applying a Program to an Array

Explains the APLY command for transforming array elements.

Full Command and Function Reference

How to Access Commands and Functions

Explains key presses and menu paths to access commands.

ABS (Absolute Value)

Details the absolute value function and its array behavior.

ACOS (Arc Cosine)

Explains the inverse cosine function, domain, and range.

Computer Algebra Commands

CAS Operations

Overview of CAS operations and their categorization by menu.

Algebra commands

Lists and describes commands for algebraic manipulation.

Calculus Commands

Covers derivation, integration, and limit commands.

Equation Reference

Columns and Beams (1)

Provides equations for structural mechanics.

Electricity (2)

Lists equations related to electrical circuits and laws.

Fluids (3)

Covers equations for fluid mechanics.

The Development Library

Introduction

Explains the purpose and usage of the development library.

Tools for Development

Details APEEK, PEEK, POKE, POKEARM commands.

MASD Compiler

Discusses syntax, modes, and directives for MASD.

Error and Status Messages

Messages Listed Alphabetically

Alphabetical list of error messages.

Messages Listed Numerically

Numerical list of error messages by hex code.

System Flags

System Flags (continued)

Description of various system flags.

System Flags (continued)

Continuation of system flags description.

Reserved Variables

Contents of the Reserved Variables

Explanation of key reserved variables.

PPAR

Details plotting parameters.

Technical Reference

Object Sizes

Lists object sizes in bytes.

Symbolic Integration Patterns

Provides a table of symbolic integration patterns.

Parallel Processing With Lists

General rules for parallel processing

Explains conditions for parallel list processing.

Group 4: ADD and +

Describes how ADD and + handle parallel list operations.

Keyboard Shortcuts

Press and Hold key combinations

Lists functions performed by key combinations.

Shifted softkeys

Explains shift key effects on menu labels.

The Menu-Number Table

-- menus 0-117 are semi-compatible with 48G menus --

Menu numbers and paths for built-in menus.

-- New Library 222 commands --

Details commands available in Library 222.