GO-21 SciRPN|工具線上App不用買

GO-21 SciRPN simulates the venerable HP-21 Pocket Scientific Calculator from 1975. Virtually indistinguishable from the real item in operation, GO-21 is a powerful yet simple retro calculator.

GO-21 combines the classic behavior of the HP-21 with modern iPhone capabilities like key click sounds, visual touch feedback, persistent stack, memory and display format, and help information.

• Requires iOS 6.0 or later

• RPN

• Copy / Paste

• Shake to clear X

• Swipe gestures that roll and display the stack

• Addition, subtraction, multiplication, division

• Trigonometric functions : sin, cos, tan, sin⁻¹, cos⁻¹, tan⁻¹, degrees or radians

• Rectangular/polar coordinate conversion

• Logarithmic functions : log, 10**x, ln, e**x

• Other functions : Y**x,1/x, √x, π

• Display : LED, 10 significant digits (8 + 2 digit exponent in scientific notation), 10-99 to 10+99

• Memory : 4 register stack, stack roll down, X-Y interchange, manual memory with register math

• floating stack and memory window

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免費玩GO-21 SciRPN App

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