Every time I happen across the 74HCTXXX pin-out page in the Maplin catalogue I get a deep longing to design my own computer from the NAND gates up. Nostalgic dreams of front panels full of flashing lights and rows of toggle switches, of operating systems that fit into Kilobytes rather than Gigabytes swirl before my eyes.
Rather than just dream, Bill Buzbee has designed and built a superbly engineered home brew CPU from about 200 74-series TTL chips. Once you’ve marveled at the details of Magic-1, check out the Links page and the Homebuilt CPU ring.
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