HP 48GII User Manual

3-24 Full Command and Function Reference
See also: ARC, LINE, TLINE
BUFLEN
Type: Command
Description: Buffer Length Command: Returns the number of characters in the hp49g+/hp48gII
's serial
input buffer and a single digit indicating whether an error occurred during data reception.
The digit returned is 1 if no framing, UART overrun, or input-buffer overflow errors occurred
during reception, or 0 if one of these errors did occur. (The input buffer holds up to 255 bytes.)
When a framing or overrun error occurs, data reception ceases until the error is cleared (which
BUFLEN does); therefore, n represents the data received before the error.
Use ERRM to see which error has occurred when BUFLEN returns 0 to level 1.
Access: …µ
BUFLEN
Input/Output:
Level 1/Argument 1 Level 2/Item 1 Level 1/Item 2
→
n
chars
0/1
See also: CLOSEIO, OPENIO, SBRK, SRECV, STIME, XMIT
BYTES
Type: Command
Description: Byte Size Command: Returns the number of bytes and the checksum for the given object.
If the argument is a built-in object, then the size is 2.5 bytes and the checksum is #0.
If the argument is a global name, then the size represents the name and its contents, while the
checksum represents the contents only. The size of the name alone is (3.5 + n), where n is the
number of characters in the name.
Access: !°
MEMORY BYTES ( °is the left-shift of the Nkey).
Input/Output:
Level 1/Argument 1 Level 2/Item 1 Level 1/Item 2
obj
→
#n
checksum
x
size
See also: MEM
B→R
Type: Command
Description: Binary to Real Command: Converts a binary integer to its floating-point equivalent.
If # n
≥ # 1000000000000 (base 10), only the 12 most significant decimal digits are preserved in
the resulting mantissa.
Access: …ã
B→R ( ãis the right-shift of the 3key).
Flags: Binary Integer Wordsize (–5 through –10), Binary Integer Base (–11, –12)
Input/Output:
Level 1/Argument 1 Level 1/Item 1
#n
→
n
See also: R→B
C2P
CAS: Take a list of cycles and return the equivalent permutation.

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.