Science Toolkit
How to use
What it does
A small set of calculation and reference tools for science and engineering: simplify boolean expressions with a Karnaugh map, look up common physical constants with units, read a resistor's value from its colour bands or work out the band colours from a value, and perform binary logic operations and conversions between number bases. Useful for digital electronics homework, checking constants in a physics problem, or identifying a resistor. Two merged tabs — a truth-table generator and a logic-gate sandbox — load on demand at the end of the tab bar.
How to use it
Switch modules at the top. In the Karnaugh map panel, click cells to mark truth values and the simplified sum-of-products expression appears live; the constants table is searchable and shows value, unit and uncertainty; the resistor panel lets you choose the number of bands and set each colour, displaying the resulting value and tolerance range; the base conversion and logic modules use linked input fields.
FAQ
How do I actually use the Karnaugh map?
Click the cells corresponding to the 1s of your truth table and the simplified sum-of-products expression updates live. With many variables, lay out the truth table on paper first so you tick the right cells.
In what order do resistor colour bands read, and what if I forget the colour values?
You do not need to memorise anything: pick the band count, set each colour, and the value with tolerance shows live. The reverse lookup — bands for a given value — also works, handy for checking a physical resistor.
What does the uncertainty in the constants table mean?
It marks the measurement error range in the last digits of a value, not a mistake in the data. For coursework use whatever your textbook prescribes; this table suits checking magnitudes, units and significant figures.
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