Differences between events and semaphores

Question

I already searched for this subject but couldn't understand it very well. What are the main differences between events and semaphores?

Answer 1

An event generally has only two states, unsignaled or signaled. A semaphore has a count, and is considered unsignaled if the count is zero, and signaled if the count is not zero. In the case of Windows, ReleaseSemaphore() increments a semaphore count, and WaitForSingleObject(...) with a handle of a semaphore will wait (unless the timeout parameter is set to zero) for a non-zero count, then decrement the count before returning.