What does the word Semaphore mean?

The Word "semaphore" refers to a system of sending messages using visual signals, often with flags, lights, or mechanical devices. In computing, it denotes a synchronization mechanism that controls access to shared resources by multiple processes, helping to prevent conflicts. The term originates from the Greek Words "sema," meaning "sign," and "phorein," meaning "to carry." Semaphore systems are used in various contexts, including transportation, telecommunications, and programming.