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Using a single GPIO port on a microcontroller to control N bits of arbitrary parallel binary outputs, e.g., a multi-digital ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Dawn Reiss Life can be unpredictable, overwhelming, and just plain difficult.

Shelby Putnam Tupper is founder and creative director of Shelby Designs Inc., a small-but-mighty, full-service, customer-obsessed design consultancy.