Core Viewpoint - The article discusses the historical significance of Mostek's MK4116 and MK4164 DRAM products, highlighting their role in standardizing memory architecture for microcomputers in the late 1970s and early 1980s [1][8]. Group 1: MK4116 Development - The MK4116, launched in 1977, addressed key challenges in the dynamic memory market by simplifying the RAS/CAS protocol and packaging 16Kbit capacity in a standard 16-pin DIP [2][4]. - It utilized a single-transistor dynamic unit with a 128×128 matrix structure, enhancing throughput during a time when microprocessor speeds were slower [2][4]. - Despite requiring a complex power supply of +12V, +5V, and -5V, the MK4116 achieved remarkable sales, becoming a standard in various early personal computers and arcade hardware [4][5]. Group 2: Transition to MK4164 - The MK4164, a 64Kbit DRAM, was introduced to overcome the multi-voltage limitations of earlier models, operating on a single +5V power supply [5][7]. - It expanded the address bus to eight multiplexed lines and maintained compatibility with existing page mode conventions, simplifying design and reducing costs [5][7]. - The speed of MK4164 ranged from 120 to 150 nanoseconds, meeting the demands of early PCs and microcontrollers, but faced challenges from rising Japanese memory manufacturers and price wars [7][8]. Group 3: Legacy and Impact - Both MK4116 and MK4164 are recognized for their contributions to standardizing DRAM architecture, influencing modern SDRAM and DDR devices [8]. - They played a crucial role in the proliferation of microcomputers, arcade systems, and early personal computers, establishing a legacy that few chips have matched [8].