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How to build an 8-bit TTL computer from scratch
- ColinWright 14y agoThe actual build is documented at the submission here: http://news.ycombinator.com/item?id=3913879 http://news.ycombinator.com/item?id=3913879
- jrabone 14y agoAn Arduino to do the BCD conversion? Has the world supply of 7448/74184/74185 chips run out?
- rlpb 14y agoI'd really like to see a computer made entirely from transistors, and only transistors. I feel that using ICs hides a lot of it away. Admittedly the thing would be massive, perhaps covering a wall. But it would be a great demonstration of how it _is_ possible to build such a thing using just one key component. Bonus points: make it 32-bit, include an MMU, and boot Linux on it. You may use more than one wall.
- bunderbunder 14y agoHovey’s 8-bit ALU (arithmetic logic unit) is constructed completely out of transistor-transistor logic. I did that once. All it took was a couple 74181 chips.