The fx-50FH II’s programming feature intimidates many users. Here is a manual-inspired tutorial:
The Casio fx-50FH II is a specialized mid-range scientific calculator notable for its specific market positioning within the Hong Kong and Macau education systems. Unlike global counterparts like the fx-991 series, the fx-50FH II is distinguished by its H.K.E.A.A. (Hong Kong Examinations and Assessment Authority) approval for public examinations and, crucially, its built-in Simple Programming capability. It serves as a bridge between standard non-programmable scientific calculators and advanced graphing calculators, offering 680 bytes of memory for user-defined formulas without the complexity (or exam prohibition) of full graphing units.
Since flipping through a PDF during an exam is impossible, create your own quick card based on these frequently needed actions from the manual: casio fx50fh ii manual
| Function | Key Sequence |
| --- | --- |
| Reset calculator (clear all memory) | SHIFT → CLR (9) → 3 → = → AC |
| Convert decimal ↔ fraction | a b/c |
| Convert decimal ↔ degrees/minutes/seconds | ° ' " key (below tan) |
| Calculate modulo (remainder) | Use the operator Rnd(, but better: A÷B → store quotient integer → subtract. Manual formula. |
| Store a value to variable A | Value → SHIFT → STO → A |
| Recall variable A | RCL → A |
| Clear only the program area | SHIFT → CLR (9) → 1 → = |
| Change from Normal to Scientific notation | SHIFT → MODE → 7 (Sci) → choose digits (e.g., 3 for 3 s.f.) |
The official manual is roughly 45-50 pages long. It is concise but dense. Let’s decode the most critical chapters. Since flipping through a PDF during an exam
Example program (Area of a circle given radius):
? → A (Prompt for radius)
π × A² → B (Calculate area)
B (Display result)
It is tempting to assume that you can figure out a calculator through button-mashing. The fx-50FH II, however, is not a basic four-function calculator. It is a scientific calculator with 680 functions, including linear regression, complex number calculations, and base-n conversions. Without the manual, you stand to lose: It is tempting to assume that you can
The manual begins with warnings in red.