Casio Fx50fh Ii Manual May 2026

The Casio fx-50FH II is a high-performance programmable scientific calculator, widely recognized for its approval by the HKEAA for use in exams. It features a BASIC-like programming language, a 2-line dot matrix display, and 406 built-in functions. Key Specifications & Features

Programmability: Includes 4 program areas for custom user formulas.

Built-in Content: Pre-loaded with 23 high-demand engineering formulas and 40 scientific constants. casio fx50fh ii manual

Power Supply: Uses a dual power system (Solar + LR44 Battery), with an approximate battery life of 3 years.

Advanced Math: Supports complex number calculations, base-n conversions, logical operations, and statistical regression analysis. The Casio fx-50FH II is a high-performance programmable

Display: 10 + 2 digit high-resolution screen with a Multi-replay function for quick formula editing. Quick Setup & Programming Guide

Resetting the Device: To return to factory defaults and clear all memory (including programs), press SHIFT + 9 (CLR) + 3 (All) + EXE (w). Entering Program Mode: Press MODE repeatedly until you see PRGM. Select 1 (EDIT) and choose a slot (1–4). Error messages and causes (Math ERROR, Syntax ERROR)

Use commands like ? for input and ◢ for output (found via SHIFT + 3 (PROG)).

Changing Modes: Use the MODE key to toggle between COMP (basic math), CMPLX (complex numbers), and SD/REG (statistics). Maintenance & Troubleshooting fx-50FHII | CASIO

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7. Technical Information

• Error messages and causes (Math ERROR, Syntax ERROR).
• Hard reset procedure: SHIFT + CLR + 9 + = + AC.

8. Complex Number Calculations (CMPLX Mode)

• 8.1 Entering Complex Numbers (a+bi)
• 8.2 Arithmetic with Complex Numbers
• 8.3 Argument (arg), Absolute Value (abs)
• 8.4 Conjugate (Conjg)
• 8.5 Extracting Real and Imaginary Parts

Common Programming Errors (and How the Manual Solves Them)

• Syntax ERROR – Forgot multiplication sign (2A is fine; A B needs A×B).
• Stack ERROR – Too many nested parentheses (max depth 10).
• Argument ERROR – Tried to store a program to a read-only variable.

Section 5: Equation Solver (EQN Mode)

Press MODE 3 → 1 (for simultaneous linear equations) or 2 (for quadratic/cubic).

• Many students fail because they forget that the quadratic solver returns roots in complex form only if you are in CMPLX mode first—the manual clarifies this on Page 28.
• The cubic solver is notoriously slow; the manual suggests using Newton’s method in COMP mode as a faster alternative.