Mutexes and semaphores in .NET. A mutex is used to synchronize access to a protected resource or a “critical section” of code. (A critical section is code that must not be run by multiple ...

This isn’t the first message Adobe’s semaphore code has signaled. After completion in 2006, the full text of Thomas Pynchon’s 1966 novel “The Crying of Lot 49” was the very first ...

San Jose Semaphore, an art installation by New York artist Ben Rubin on the 18th floor of Adobe's Almaden Tower in downtown San Jose, began transmitting a new code in October 2012.