Television Clock at Mac App Store analyse

A beautiful retro clock inspired by the test card commonly used in Europe, Australia and Asia from the early 1970s to the late 90s. A test card, also known as a test pattern, is a television test signal, typically broadcast at times when the transmitter is active but no programme is being broadcast (often at startup and closedown). Used since the earliest TV broadcasts, test cards were originally physical cards at which a television camera was pointing at.