"Button inputs" refers to pressing or clicking specific buttons on a device, such as a keyboard, controller, or touchscreen, to give commands or perform actions. Full definition
These packs turn a number of the game's fatalities into two button press commands: significantly easier than the usual four or five - button inputs required. (techtimes.com)
Attack requires specific button inputs, in time to successfully complete. (powerup-gaming.com)
Traditional button inputs aren't mapped out quite as you would expect. (impulsegamer.com)