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2. HID Global - Wikipedia

   en.wikipedia.org/wiki/HID_Global

   HID Global. HID Global is an American manufacturer of secure identity products. The company is an independent brand of Assa Abloy, a Swedish door and access control conglomerate. [2] Björn Lidefelt was appointed CEO on 27 January 2020. He succeeded Stefan Widing, who led HID Global for over four years.

3. Access control - Wikipedia

   en.wikipedia.org/wiki/Access_control

   Access control systems using serial controllers and terminal servers. 4. Serial controllers with terminal servers. In spite of the rapid development and increasing use of computer networks, access control manufacturers remained conservative, and did not rush to introduce network-enabled products.

4. SCADA - Wikipedia

   en.wikipedia.org/wiki/SCADA

   SCADA ( supervisory control and data acquisition) is a control system architecture comprising computers, networked data communications and graphical user interfaces for high-level supervision of machines and processes. It also covers sensors and other devices, such as programmable logic controllers, which interface with process plant or machinery.

5. Building automation - Wikipedia

   en.wikipedia.org/wiki/Building_automation

   Building automation ( BAS ), also known as building management system ( BMS) or building energy management system ( BEMS ), is the automatic centralized control of a building's HVAC (heating, ventilation and air conditioning), electrical, lighting, shading, access control, security systems, and other interrelated systems.

6. Industrial control system - Wikipedia

   en.wikipedia.org/wiki/Industrial_control_system

   An industrial control system ( ICS) is an electronic control system and associated instrumentation used for industrial process control. Control systems can range in size from a few modular panel-mounted controllers to large interconnected and interactive distributed control systems (DCSs) with many thousands of field connections.

7. Distributed control system - Wikipedia

   en.wikipedia.org/wiki/Distributed_control_system

   SCADA. v. t. e. A distributed control system ( DCS) is a computerized control system for a process or plant usually with many control loops, in which autonomous controllers are distributed throughout the system, but there is no central operator supervisory control. This is in contrast to systems that use centralized controllers; either discrete ...