relay

Mark Handley of UCL explains, with simulation visualizations, how early Starlink satellites without inter-satellite links could still give low-latency wide-area communication by hopping via ground relays. He shows it can beat fibre on many long paths.

Technology Connections takes apart a 1970 Wurlitzer 3400 jukebox to show how electromechanical relays and switches automated its behavior without a computer.

Technology Connections takes a long, detailed look at how a 1970s electromechanical pinball machine works, from relays to stepper motors and mechanical logic. It is the first part of a series.

David Nolen presents Om Next, the redesign of the ClojureScript Om library, drawing on Relay, Netflix's JSONGraph and Datomic. He covers the tradeoffs in handling the client-server boundary over immutable data.

Technology Connections takes apart the step-by-step electromechanical logic of a 1970s pinball machine. He shows how relays, steppers and switches track state and score without electronics.

Mentalist Derren Brown plays nine skilled English chess players, including four grandmasters, simultaneously on his TV show. The trick behind the apparent win is the point of the segment.

Technology Connections explains why car turn signals appear to drift out of sync at stoplights and how thermal and other flasher designs work. It also covers how synchronization could be achieved.

Part 4 of the BBS: The Documentary series, covering FidoNet, the amateur network that linked dial-up bulletin board systems together to relay messages and files worldwide.

AdoredTV relays leaks and insider accounts of what it is like inside Intel, including staffing changes and morale. It is a commentary video from 2020.

A short clip of the Harwell Dekatron/WITCH, the world's oldest original working digital computer from 1951, being restarted at The National Museum of Computing in 2012.