Programmable logic controller

device · 1968 · Digital age

An industrial controller (Modicon).

What it is made of

• Microprocessor — has part. A processor.

Principles and materials it uses

• Silicon — is made of. The chips are silicon.
• Plastic — is made of. The case is plastic.

Where it is used

• Industrial automation — is used in. Controllers.
• SCADA — is used in. Polling the controllers.
• Chemical plant — is part of. Process control automation.

History: what it evolved from and what it influenced

• Relay — evolved from. It replaced relay cabinets.

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