Ken Shirriff's blog

Computer history, restoring vintage computers, IC reverse engineering, and whatever

Reverse engineering RAM storage in early Texas Instruments calculator chips

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Texas Instruments introduced the first commercial single-chip computer in 1974, combining the CPU, RAM, ROM, and I/O into one chip. This f...
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Reverse-engineering the classic MK4116 16-kilobit DRAM chip

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Back in the late 1970s, the most popular memory chip was Mostek's MK4116, holding a whopping (for the time) 16 kilobits. It provided ...
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Reverse-engineering the carry-lookahead circuit in the Intel 8008 processor

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The 8008 was Intel's first 8-bit microprocessor, introduced in 1972. While primitive by today's standards, the 8008 is historicall...
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