The fx-260 Solar II is an update of the very classic Casio fx-260 Solar (outside the United States, it’s the fx-82 Solar). Functionally, the fx-260 Solar II is the same as the classic fx-260. As a reminder:
- Trigonometric functions
- Angle conversions: polar, rectangular, to degrees (Shift Mode 4), to radians (Shift Mode 5), and to grads (Shift Mode 6)
- Random numbers
- Logarithms and exponents
- 1 Variable Statistics
- Fractions (up to a maximum of 10 digits between the whole, numerator, and denominator parts)
- DMS/Decimal math and conversions
Pretty handy for a basic scientific calculator. The fx-260 Solar II, like its predecessor runs entirely on solar and light power, hence a completely green calculator. 50 lux is required.
The NF version which was stated on the quick manual that came with the fx-260 Solar II. The NF stands for “no fraction” and the diagram shows the fraction button [ a b/c ] button disabled.
The percent key still works the same as the predecessor. The keystrokes:
- Find N% of W: W [ * ] N [Shift] [ = ] (%)
- W is N% of the whole: W [ ÷ ] N [Shift] [ = ] (%)
- Markup/Tax: W [ * ] N [Shift] [ = ] (%) [ + ]
- Discount: W [ * ] N [Shift] [ = ] (%) [ - ]
The differences between the fx-260 Solar II are:
- The processor is faster, most noticeable when try to calculator n! when 50 < n < 69. In reality, it can be seen as negligible since the predecessor is no slow poke.
- The fx-260 Solar II is has a more compact design than the original fx-260 Solar. The fx-260 Solar II is close to a size of an iPod Touch/iPhone. Per the manual, the dimensions of the fx-260 Solar II are 3/8” height, 2 3/4” width, and 4 3/4” depth.
- The mode reminders are moved to the back of the calculator.
