HPR4718: Programmable Logic Controls - Episode 2
Hacker Public Radio

HPR4718: Programmable Logic Controls - Episode 2

B2Upper-intermediateSeptember 2, 2026

This show has been flagged as Clean by the host. -------------------- 01 Introduction This is the second episode in an 8 part series. 02 In the previous episode we discussed the predecessors of PLCs, in particular relay logic. In this episode we will discuss how relay logic came to be expressed in software rather than in actual hardware components. 03 The topics to be covered include * Early computers in industry. * The first PLC.<...

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This is Hacker Public Radio episode 4718 for Wednesday 2 September 2026.

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It is hosted by Whiskey Jack, and is about 31 minutes long.

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This is Hacker Public Radio episode 4718 for Wednesday 2 September 2026. Today's show is entitled, Programmable Logic Controls Episode 2. It is hosted by Whiskey Jack, and is about 31 minutes long. It carries a clean flag.

0:23

The summary is a brief overview of industrial control systems. Introduction This is the second episode in an eight-part series. In the previous episode, we discussed the predecessors of PLCs, in particular, relay

0:52

logic. In this episode, we will discuss how relay logic came to be expressed in software rather than in actual hardware components. The topics to be covered include early computers in industry, the first PLC, PC versus PLC,

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