controler

Controler is not a standard English spelling. In most contexts, the correct term is controller. The form controler can appear as a misspelling or as a transliteration in non-English languages, where similar roots exist or where diacritics are omitted in writing systems that do not use them.

In other languages, similar words exist with different spellings and accents: French contrôleur; Dutch controleur; German Kontrolleur; Turkish kontrolör. In these languages, the term generally designates a person who supervises, inspects, verifies, or regulates, or a device that performs a control function. When used in English texts, controler is typically treated as a misspelling or as a proper noun in specific names or brands.

In technology and computing, a controller refers to a device or software component that manages the operation of another subsystem. Examples include game controllers, storage controllers, network controllers, and peripheral controllers in embedded systems. In software architecture, a controller mediates between user input, data models, and user interfaces, coordinating actions and data flow.

In business and public administration, a controller is a role such as a financial controller, responsible for accounting, budgeting, and financial reporting; a production controller may oversee manufacturing processes. In some contexts, a controller may also be an inspector or auditor. When writing in English, it is advisable to use controller for general purposes, reserving controler for rare, specialized, or language-specific uses.