The engineer Herman Hollerith designed his legendary counting machine in the mid-1880s, which was then used on a large scale for the first time in the US Census in 1890. This film explains how this came about and then uses the replica of history@IBM to explain how this important invention works. Jumpmarks: 00:19 Introduction: How did the counting machine come about? 01:38 Demo: Data acquisition with the pantograph punch 02:25 Explanation: Punch card format 03:06 Demo: Evaluate cards with the reader device and advance the counters 03:34 Explanation: How the reader and counting machine work 04:30 Demo: Sorting box 06:18 Explanation: Effects on the Evaluation of the 1890 Census 07:20 Final credits Music used: - Amazing Plan (Kevin MacLeod): https://incompetech.com/, https://filmmusic.io/ Recommended playlists: - Computer simply explained:    • Computer einfach erklärt   - Computer museums:    • Computermuseen   Version control: - GitHub: https://github.com/michael-holzheu/HETS Changelog: 02/21/2020 First version