Casio FX-890P User Manual

44
SYSTEM
PURPOSE: Shows main system status.
FORMAT: SYSTEM
EXAMPLE: SYSTEM
PRINT OFF TRACE OFF
CLEAR 4096,512,6144
FREE 83703 V:4096
_
EXPLANATION: Data returned by the SYSTEM statement are:
1. PRINT mode (ON/OFF)
2. TRACE mode (ON/OFF)
3. CLEAR followed by 3 numbers. These are the parameters of the last CLEAR
statement entered.
- First number is the memory area size in Bytes. This is what returns FRE 3.
- Second number is the assembler area size in Bytes. This is what returns
FRE 6
- Third is overall variables area size. This is what returns FRE 2
4. FREE followed by two numbers
- Total free area in Bytes. This is what returns FRE 1
- Variables free area in Bytes. This value is inferior or equal to memory area
size. This is what returns FRE 5.
SEE: FRE, CLEAR
SYSTEMP
PURPOSE: Shows memory status of BASIC program areas P0-P9.
FORMAT: SYSTEMP
EXAMPLE: SYSTEMP
P0[ 0] P1[ 0] P2[ 0]
P3[ 0] P4[ 0] P5[ 0]
P6[ 0] P7[ 0] P8[ 0]
P9[ 0]
EXPLANATION: The number following each Pn is the amount of Bytes the program
area is using. Value 0 shows that program area is empty.
SYSTEMF
PURPOSE: Shows memory status of file areas F0-F9.
FORMAT: SYSTEMF
EXAMPLE: SYSTEMF
F0[ 0] F1[ 0] F2[ 0]
F3[ 0] F4[ 0] F5[ 0]
F6[ 0] F7[ 0] F8[ 0]
F9[ 0]
EXPLANATION: The number following each Fn is the amount of Bytes the file area
is using (BASIC file, C or assembler program). Value 0 shows that file area is empty.
M
m
0
M
m
0
M
m
0

Casio FX-890P Specifications

General

Brand	Casio
Model	FX-890P
Category	Desktop
Language	English

Summary

Unit Configuration

Operational Functions

Details the primary keys and their functions, including power, shift, and numeric keys.

Keyboard Layout

Describes the arrangement of keys and how to access different functions.

Power and System Features

Power Supply and Battery Replacement

Provides instructions for replacing the calculator's batteries.

Fundamental Operation Modes

CAL Mode

Describes the primary calculation mode active upon power-on.

Formula Storage Function

Explains how to store and recall mathematical formulas for repeated calculations.

Programming Modes

Introduces BASIC, C, CASL, and Assembler modes for programming.

Calculation Functions

Manual Calculation Input and Correction

Guides on entering and correcting arithmetic and function calculations.

Scientific Calculations

BASIC Programming

Features of BASIC

Highlights the advantages and capabilities of the BASIC language.

BASIC Program Configuration

BASIC Program Input

Provides steps for entering and preparing BASIC programs.

BASIC Program Execution

Details how to run BASIC programs and handle execution errors.

BASIC Variables and Commands

Variables

Explains numeric, string, and array variables in BASIC.

BASIC Command Reference

A comprehensive reference for BASIC commands and functions.

BASIC Command Reference Details

Mathematical Functions

Reference for ABS, ACS, ANGLE, COS, SIN, SQR, TAN, etc.

BASIC String and Graphical Functions

C Programming Introduction

The Basics of C

Learning C with Pocket Computer

Guidance on using the pocket computer as a C learning tool.

Meet the Casio C Interpreter

Introduces the C interpreter and its operation compared to compilers.

C Program Input Procedures

C Interpreter and Editor Overview

Activating C Mode

Using the C Editor

Details on creating and editing C source code.

C Program Execution

Executing C Programs

Trace Function

C Programming Essentials

Outputting Characters

Variable Types and Operations

Covers C data types (char, int, float, double) and assignments.

Entering Characters and Values

Selection Statements

Explains the 'if' and 'if-else' statements for conditional logic.

C Control Flow and Functions

Using Loops

Details 'while', 'do-while', and 'for' loops for repetitive execution.

Defining Functions

Explains how to create and use custom functions in C.

C Constants, Variables, and Operators

Constants and Variables

Covers variable scope, types, and storage.

Local Variables and Global Variables

Pointers and Variable Storage Locations

Data Types and Lengths

C Operators and Command Reference

Operators

Lists and explains C operators and their precedence.

C Command Reference

Reference for C commands like RUN, EDIT, TRON, TROFF.

C Command Reference Details

Manual Commands

Fundamental Commands

String Functions

Reference for strcat, strchr, strcmp, strcpy, strlen.

Graphical Functions