Univac built a 4 bit computer that ran off of compressed air using fluidics[0]. Making a TV would be much more difficult though. It is very difficult to make mechanical systems that can interact with electromagnetic radiation or work at similar frequencies. However we can get pretty far. The Scophony television is almost entirely mechanical. We feed the TV signal into a piezoelectric crystal which creates an ultrasonic wave that propagates through a clear fluid filled cell. We can shine light through this and the propagating wave will cause changes in light intensity due to the density variations. We can then scan this line of changing intensities through a some rotating mirrors to make a picture. Perhaps with an intense enough signal we could drive the piezoelectric directly, or perhaps we can make a MEMS based mechanical amplifier to amplify the tiny vibrations produced by a piezoelectric element directly driven by RF.
Have you seen this - https://en.wikipedia.org/wiki/Fluidics which seems pretty cool. There seem to be computers which use liquid and formations of pipes to create different logic elements.
Univac built a 4 bit computer that ran off of compressed air using fluidics[0]. Making a TV would be much more difficult though. It is very difficult to make mechanical systems that can interact with electromagnetic radiation or work at similar frequencies. However we can get pretty far. The Scophony television is almost entirely mechanical. We feed the TV signal into a piezoelectric crystal which creates an ultrasonic wave that propagates through a clear fluid filled cell. We can shine light through this and the propagating wave will cause changes in light intensity due to the density variations. We can then scan this line of changing intensities through a some rotating mirrors to make a picture. Perhaps with an intense enough signal we could drive the piezoelectric directly, or perhaps we can make a MEMS based mechanical amplifier to amplify the tiny vibrations produced by a piezoelectric element directly driven by RF.
[0]https://dl.acm.org/citation.cfm?id=1464112 [1]http://www.bluehaze.com.au/modlight/UltrasoundMod.htm
Heard of generators? You can do that.
Well I meant with no electricity at all. Here are some people who attempted it: https://www.niklasroy.com/workshop/184/PneumaticComputing
Have you seen this - https://en.wikipedia.org/wiki/Fluidics which seems pretty cool. There seem to be computers which use liquid and formations of pipes to create different logic elements.