Scientific Calculator

What the export looks like. Two views of the same history. First a Markdown table — number, expression, result, angle mode, time — that drops straight into Obsidian or Notion. Then a paper tape: a fixed-width strip laid out the way an old printing calculator spat it out, results flush right against a dotted leader. Decimals are rounded to four places in both (0,3333), while the screen keeps full precision.

Numbers use a comma. 3,14 is three point one four, and the display groups thousands with dots as you type — 1234567 becomes 1.234.567. Dots are therefore separators only: the calculator re-inserts them every keystroke, so typing one does nothing. Backspace steps over them and eats the digit, as you would expect.

Notes on syntax. Implicit multiplication works — 2pi, 3(4+1), 2sin(30). % divides by 100, so 50% is 0,5. log is base 10, ln is natural. -2^2 is -4, following the usual convention that the power binds first.