The Atari standard joystick, developed for the Atari 2600, released in 1977, was a digital controller, with a single fire button. The Atari joystick port was for many years the "de facto" standard digital joystick specification. Joysticks were commonly used as controllers in first and second generation game consoles, but they gave way to the familiar game pad with the Nintendo Entertainment System and Sega Master System during the mid-1980s, though joysticks—especially arcade-style one—were and are popular after-market add-ons for any console.