This video looks at serial to parallel conversion in digital electronic circuits. In particular it shows how we can drive a sequence of LEDs using a single pin of the Arduino. Also, it discusses the difference between latched and unlatched serial to parallel converters. The particular ICs that are examined are the 74HC164 and the 74HC595 (latched), where the video demonstrates how to drive 8 LEDs using a single pin and 16 LEDs using two pins of serial data. This video is part of an introductory module on digital electronics.