Flutterby™! : Homemade ICs

Making integrated circuits at home: Sam Zeloof: Second IC. His previous IC was a “Z1” PMOS dual differential amplifier chip:

The Z1 had 6 transistors and was a great test chip to develop all the processes and equipment. The Z2 has 100 transistors on a 10µm polysilicon gate process – same technology as Intel’s first processor. My chip is a simple 10×10 array of transistors to test, characterize, and tweak the process but this is a huge step closer to more advanced DIY computer chips. The Intel 4004 has 2,200 transistors and I’ve now made 1,200 on the same piece of silicon.

Via https://mobile.twitter.com/szeloof/status/1426320038072659971