Introduction of the term semaphore

Question

Give a brief introduction of the term semaphore?

Answer 1

- A semaphore is a software or hardware tag variable whose value points to the status of a general resource.

- Its intention is to lock the common resource being employed. A process that needs the resource will check the semaphore to verify the status of the resource followed through the decision for proceeding.

- In multitasking operating systems, the actions are synchronized through employing the semaphore methods.