Harvard Professor Harry Lewis on Early Calculating and Computing Devices

Harry R. Lewis ’68, Ph.D. ’74, Gordon McKay professor of computer science emeritus, and former dean of Harvard College and interim dean of the Harvard John A. Paulson School of Engineering and Applied Sciences, discusses early calculating and computing and shows us his collection of devices.
Read Harry Lewis' feature article in Harvard Magazine on six decades of relations with computers:
www.harvardmagazine.com/2024/...
Read more from Harry Lewis:
www.harvardmagazine.com/write...
www.harvardmagazine.com/2020/...
www.harvardmagazine.com/2012/...
Timestamps:
0:30-1:01 slide rule
1:02-4:31 cruising rod, early mechanical calculator
4:32-5:36 switches and relays
5:37-6:18 elevator control relay example
6:19-8:02 vacuum tube machine switches
8:03-10:04 module from the TX2 computer
10:05-11:38 integrated circuits
11:39-13:56 storage, control cards
13:57-16:47 core memory plane
16:48-19:15 disk drive
19:16-21:40 manual for PDP 4 computer
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