Monolithic Memories

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Monolithic Memories, Inc. (MMI) produced bipolar PROMs, programmable logic devices, and logic circuits (including 7400 series TTL). MMI invented Programmable Array Logic (PAL) devices. MMI was founded in 1969 and was eventually acquired by Advanced Micro Devices (AMD) in 1987, though AMD later spun off their programmable logic division as Vantis, which was then acquired by Lattice Semiconductor.