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How to use the ISNUMBER function in Microsoft Excel

Master Excel’s most versatile logical gatekeeper to validate inputs, prevent math crashes, and automate complex spreadsheet ...

The Advanced Google Sheets Features You Should Be Using but Probably Aren’t

This Google Sheets Advanced Tutorial explains IF, VLOOKUP, INDEX MATCH, and pivot tables, plus macros and Apps Script for workflow automation.
NextBigFuture

Logic Functions Using Two Terminal Devices for Easier Self Assembly of Molecular Computing

via Steve Jurvetson – Stan Williams, HP guru, has figured out a way to implement all logic functions without negation. It is easy to implement all logic functions using only NAND or NOR gates, but not ...