In this video, we'll build the first of three 8-bit registers used in the 8-bit computer!
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You can get all the components used in this video from any online electronic components distributor for a few dollars. See https://eater.net/bbcpu8-registers for more.
Complete parts list (everything in this video):
2x 74LS173 (4-bit D-type register)
1x 74LS245 (Octal bus transceiver)
8x LED
22 gauge wire
5 volt power source (e.g., a USB phone charger)
(The computer will have 3 registers like this; see the next video for details)