Signetics

Signetics, once a major player in semiconductor manufacturing, made a variety of devices which included integrated circuits, bipolar and MOS, the Dolby circuit, logic, memory and analog circuits. They developed microprocessors like the 2650, the bipolar 8X300, and had licensed Motorola 68000 technology. Derivatives of this were used in the first Atari video games, as was the 2513 text display ROM. Later they were taken over by Philips and fully integrated into Philips Semiconductors (now NXP).