How did Scantron Work?

T1Covered by 1 source · first reported by Raspberry Pi / Arduino / Adafruit at 29 Sept, 14:00 UTC

SimonRetro takes a deep dive into a Scantron machine and shows how it grades tests, what’s inside and more.

Sources

• T1How did Scantron Work?Raspberry Pi / Arduino / Adafruit29 Sept, 14:00