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Discrete logic arcade games

From Sega Retro

Discrete logic arcade games are the earliest form of what we would recognize as the modern video game. By using a cathode ray tube (CRT) TV display and a small number of logic gates rather than a full CPU, the ability of manufacturers such as Sega to produce arcade cabinets for a reasonable price in the 1970s was achieved. A discrete logic chip contains one logic gate or a small number of logic gates. Although thousands of gates are routinely placed on a single chip, discrete logic chips with only one or two gates are also manufactured. These chips are used today as "glue chips" between application-specific integrated circuits and other integrated circuits typically to reshape and transfer signals.

Today, many discrete logic arcade games have been dumped and are available for play on emulators.