Seven-Segment

Seven-segment LED displays were the first digital scoring technology to achieve widespread adoption in pinball, arriving with the earliest Solid State machines in 1977. Each digit consisted of seven independently lit LED bars arranged in a figure-eight pattern, capable of rendering the numerals zero through nine and a limited set of letters. The displays typically glowed red or amber and were mounted behind the backglass in groups of six or seven digits per player.

Every major manufacturer used seven-segment displays during the transition from Electromechanical to Solid State: Williams System 3 through Williams System 8, Bally’s Bally AS-2518-17 series, Gottlieb System 1 and Gottlieb System 80, and Stern Electronics’ Stern MPU-100 and Stern MPU-200 all relied on them. The technology was cheap, bright, and reliable — a dramatic improvement over the mechanical Score Reels it replaced, even if the blocky digits lacked the tactile charm of spinning drums.

Seven-segment displays could show numbers cleanly but struggled with text. Designers worked around the limitation by using the backglass artwork and playfield inserts to communicate everything that wasn’t a score. By the early 1980s, Sixteen-Segment alphanumeric displays had arrived, capable of rendering readable text, and seven-segment panels were phased out of new designs within a few years.