Ultra-compact tape calculator to process non-trivial expressions like: -log(1+2) * 3% + sin(4 5/6)^7.
Logs, trig and hyperbolic functions, normal and inverse. Annotate, correct and repeat calculations in the editable tape area, save to file and restore. Enter decimals or fractions. Select font, button size, always on top, more options. Quick keyboard shortcuts. Online help.
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