Automatic watches and grandfather clocks. The way they kept track of time using only mechanical principles is crazy. How does my automatic watch recharge itself using only the movement from wearing it and keep accurate track of time. Grandfather clocks are cool because they're so power efficient.
A nixie tube is a bunch of tiny lightbulbs shaped into numbers in a single pack with different pins each turning on a number.
Clearly the modern number display is better in many ways, but you were asking for coolness.
I think Nixie tubes are actually a kind of neon lamp rather than incandescent bulbs; but yes they are very mid-20th century.
I could mention toasters or pinball machines or flickering light bulbs or unusual people movers, but instead I'll save some time and just link the whole obligatory channel: https://www.youtube.com/@TechnologyConnections
Any mechanical regulation process that used to be handled by actual machine parts. Think of the centrifugal governor, this beautiful and elegant mechanical device just for regulating the speed of a steam engine. Sure, a computer chip could do it a lot better today, and we're not even building steam engines quite like those anymore. But still, mechanically controlled things are just genuinely a lot cooler.
Or hell, even for computing, take a look at the elaborate mechanical computers that were used to calculate firing solutions on old battleships. Again, silicon computers perform objectively better in nearly every way, but there's something objectively cool about solving an set of equations on an elaborate arrangement of clockwork.
The idea of punch card programming blows my mind.
He's not talking about punch card programming, that's way more advanced and requires a Turing machine, what he's talking about is computers as the term was using before what you would think as a computer existed.
The example in the video is for the computer on a cannon in a battleship. If there wasn't a computer you would need to adjust the angle and height of the cannon, but that's not something a human can know, what humans can know is angle to the ship and the distance to it, so instead you put two inputs where a human inputs that and you translate that into angle/height. Now those two would be very straightforward, essentially you just rename the height crank to distance. But this computer is a lot more complex, because wind, speed, etc can affect the shoot, so you have cranks for all of that, and internally they combine into a final output of angle/height to the cannon.
Centrifugal governors are possibly one of the origins of the phrase "balls out" or "balls to the wall" (although many say "balls to the wall" has to do with the ball-shaped handles on old aircraft throttle levers)
Also somewhat similar to governors are centrifugal switches, which are used in just about anything with an electric motor to disconnect the motor from a capacitor which gives the motor a little extra juice to get it going (I like this video for an explanation of how they work)
Also, waving a magnet around a crt was fun.
Yes!
Also, the static on the screen. I don't mean snow, but the actual static that raised your arm hairs. Whenever my parents needed to leave a note for us, they'd just stick the paper to the TV screen and it would stay there because of the static.
Older forms of computer RAM.
Before integrated circuits, we had core memory which was a grid of wires and at each intersection was a little magnetic donut that held a single 1 or 0.
https://en.wikipedia.org/wiki/Magnetic-core_memory
Before that they had delay line memory, where they used vibrations traveling down a long tube of mercury, and more bits meant a longer tube to store a longer wave train.
Even though the story involves drum memory instead, your mention of delay-lines reminds me of The Story of Mel, a Real Programmer. Y'all should read the whole thing (it's not long), but here's a quick excerpt:
Mel's job was to re-write
the blackjack program for the RPC-4000.
(Port? What does that mean?)
The new computer had a one-plus-one
addressing scheme,
in which each machine instruction,
in addition to the operation code
and the address of the needed operand,
had a second address that indicated where, on the revolving drum,
the next instruction was located.
In modern parlance,
every single instruction was followed by a GO TO!
Put *that* in Pascal's pipe and smoke it.
Mel loved the RPC-4000
because he could optimize his code:
that is, locate instructions on the drum
so that just as one finished its job,
the next would be just arriving at the "read head"
and available for immediate execution.
There was a program to do that job,
an "optimizing assembler",
but Mel refused to use it.
The Gameboy.
The switch is neat, but it's too large.
Carburetors are pretty fuckin cool.
The concept seems simple: utilize the vacuum from the engine to pull in fuel. But they're extremely complicated with all the tiny orifices and passageways to perfect the amount of fuel going into the engine at different points.
Unrelated sidenote: i got deja vu writing this comment. Interesting.
Railway signalling and interlocking systems. Sure ETCS and other digital systems are far safer, but some dude at a junction used to manually reset the points and crossovers using a giant lever. Now everything’s just a digital system overseen by someone with 8+ monitors in a control room removed from the actual network.
Also, not a technology, but rally cars used to be fully unhinged. I could watch old Group B videos for hours and never get bored.
Come to Germany, we still use parts from emperors time😂
I still think ZIP drives are pretty cool. Or using cassette tapes of any kind for data other than video/audio. Hella wish I had a DAT drive still.
The Apple II is still such a fucking cool computer.
Sure, my watch is about a billion times more powerful, but my watch will never be as cool as the Apple II.
Never did I wish I'd been born 30 years earlier quite how when I saw 8 bit guy's video on the workings of an Apple II
I simply adore how tinkerable that thing seems to be.
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