Ken Shirriff

The electromechanical angle computer inside the B-52 bomber's star tracker

The rise and fall of IBM's 4 Pi aerospace computers: an illustrated history

Instruction decoding in the Intel 8087 floating-point chip

Notes on the Intel 8086 processor's arithmetic-logic unit

Conditions in the Intel 8087 floating-point chip's microcode

The stack circuitry of the Intel 8087 floating point chip, reverse-engineered

Unusual circuits in the Intel 386's standard cell logic

A Navajo weaving of an integrated circuit: the 555 timer

Why do people keep writing about the imaginary compound Cr2Gr2Te6?

Here be dragons: Preventing static damage, latchup, and metastability in the 386

A CT scanner reveals surprises inside the 386 processor's ceramic package

How to reverse engineer an analog chip: the TDA7000 FM radio receiver

Reverse engineering the mysterious Up-Data Link Test Set from Apollo

Inside the Apollo "8-Ball" FDAI (Flight Director / Attitude Indicator)

Reverse engineering the 386 processor's prefetch queue circuitry

The absurdly complicated circuitry for the 386 processor's registers

A tricky Commodore PET repair: tracking down 6 1/2 bad chips

Notes on the Pentium's microcode circuitry

A USB interface to the "Mother of All Demos" keyset