Ohjaimina

Ohjaimina is the plural partitive form of the Finnish noun ohjain, meaning a device that controls or directs the operation of a machine, system, or process. In Finnish technical language, ohjain can refer broadly to any control device, from a hand-held remote or game controller to embedded control units in vehicles, household appliances, or industrial equipment. The term ohjaimia is used when referring to several controllers or control devices.

In electronics and computing, ohjaimet regulate inputs and outputs, implement logic, and translate user actions into machine responses. Examples include game controllers, remote controls, motor controllers, and microcontroller-based control boards. In computing, a computer itself can serve as a central ohjain coordinating software and peripherals, while in embedded systems an ohjain is often implemented as a microcontroller or a dedicated processing unit.

In industrial automation and manufacturing, ohjaimet are central components of control systems, frequently integrated in programmable logic controllers (PLCs) and human–machine interfaces (HMIs). In automotive and aerospace contexts, the term can describe control units and interfaces that manage systems such as engine control, braking, steering, or flight control.

Etymology: ohjaimia derives from ohjain (controller, device that directs) with the plural partitive suffix -ia, used for indefinite quantities. Related terms include ohjaus (control), ohjausyksikkö (control unit), and ohjainlaite (controller device).