Videos: Digital and Analog Input and Output

ITP Videos by Jeff Feddersen on Vimeo.
Watching time for videos on this page: 82:43

Digital input with internal pull-up resistors:

Pseudo-analog output:

Multiple Inputs or Outputs

Jeff explains how a multiplexer allows you to connect multiple analog or digital input circuits to a single microcontroller input.

Jeff and Tom explain how to use shift registers to control multiple digital outputs.

Jeff shows you how to control multiple LEDs on a 7-segment numerical LED display using a Binary Coded Decimal (BCD) controller

Control of an LED matrix using row-column scanning