RAM module build - part 1

2016-08-07

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Part 1 of building the RAM module for the 8-bit computer.

Support me on Patreon: https://www.patreon.com/beneater

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-ram for more.

Complete parts list (everything in the RAM module):

- 2x 74LS189 (64-bit random access memory)

- 2x 74LS04 (Hex inverter)

- 1x 74LS173 (4-bit D-type register)

- 4x 74LS157 (Quad 2-to-1 line data selector)

- 1x 74LS245 (Octal bus transceiver)

- 1x 74LS00 (Quad NAND gate)

- 14x LEDs (9 red, 4 yellow, 1 green)

- 3x 1KΩ resistors

- 1x 0.01µF capacitor

- 22 gauge wire

- 5 volt power source (e.g., a USB phone charger)