Notes concerning “Physical computation”
mechanical computation: with Merkle gates, height fields, and thread
2010-06-28 (25 minutes)
Steampunk spintronics: magnetoresistive relay logic?
2013-05-17 (15 minutes)
Nobody has yet constructed a mechanical universal digital computer
2014-04-24 (6 minutes)
An extremely simple electromechanical state machine
2014-04-24 (17 minutes)
Making a mechanical state machine via sheet cutting
2014-04-24 (updated 2015-09-03) (8 minutes)
Ideas to ship in 2014
2014-04-24 (updated 2019-05-05) (36 minutes)
Transmission line computer
2016-07-11 (updated 2016-07-13) (7 minutes)
Transmission line diode computation
2016-07-30 (3 minutes)
Digital logic with lasers, induced X-ray emission, and neutron-induced fission, for femtosecond switching times?
2016-09-06 (3 minutes)
Simple state machines
2016-09-19 (updated 2016-09-24) (9 minutes)
Nonlinear differential amplification
2016-12-14 (2 minutes)
Non-inverting logic
2017-02-18 (9 minutes)
Diode logic
2018-06-17 (16 minutes)
Snap logic
2018-06-17 (3 minutes)
Parallel register file
2018-11-27 (2 minutes)
What can you build out of 256-byte ROMs?
2018-12-02 (1 minute)
Turning a delay line into a counter with a FSM
2018-12-10 (2 minutes)
Paper foil relays
2019-04-02 (updated 2019-04-24) (11 minutes)
Hall-effect Wheatstone bridges for impractical steampunk electronic logic gates
2019-04-24 (2 minutes)