Manually reading and writing bits using a static RAM chip from 1984.
-- Links
Synertek 1981-1982 Data Catalog: https://web.archive.org/web/20221113021101if_/http://archive.6502.org/datasheets/synertek_data_catalog_1981_1982.pdf
Texas Instruments SNx4LS245 Data Sheet: https://www.ti.com/lit/ds/symlink/sn74ls245.pdf
-- Stuff
Logic Probe: https://amzn.to/3SfDRz4
TTL ICs: https://amzn.to/40WH75c
Power supply: https://amzn.to/3uAYxIE
Breadboard kit: https://amzn.to/3MYwfho
Multimeter: https://amzn.to/49PUg45
Antistatic mat: https://amzn.to/49RhcQi
My Wife's Books: https://amzn.to/47yt9Ji
(Maybe you and/or someone you know will like them!)