Semaphore in OS is a synchronization tool used to regulate access to shared resources. Know the types and advantages of semaphores in OS . Operating systems depend on semaphores as fundamental synchronization systems to empower simultaneous cycle execution while forestalling information race and halt situations. Semaphores make sense exhaustively on this page, alongside their purposes, various assortments, and benefits and detriments. What are Semaphores ? Semaphores are primitives for synchronization that are used to manage how many processes can use a single shared resource. They keep track of a count that shows how many ... Learn what is semaphore , how semaphores are used to manage concurrent processes, properties of semaphores , types of semaphores , with examples.