One of the earliest computers I did graphics programming on: <a href='https://bbcmic.ro/#%7B%22v%22%3A1%2C%22program%22%3A%22MODE%202%5CnGCOL%200%2CRND%287%29%5CnMOVE%20640%2C480%5CnDRAW%20RND%281280%29%2CRND%281024%29%5CnGOTO%2020%22%7D'>https://bbcmic.ro/#%7B%22v%22%3A1%2C%22program%22%3A%22MODE%202%5CnGCOL%200%2CRND%287%29%5CnMOVE%20640%2C480%5CnDRAW%20RND%281280%29%2CRND%281024%29%5CnGOTO%2020%22%7D</a>