I love Voyager stories. Across such an unimaginable distance (12 billion miles!), Voyager 1, which entered interstellar space in 2012, keeps ticking along on mid-1970’s technology (8-track tape!), sending messages home.
The computers can process about 8,000 instructions per second — a fraction of the capability of your smartphone, which handles upwards of 14 billion each second.
As for that data, it gets stored on an 8-track digital tape recorder and played back every six months. Voyager transmits information back to Earth using a 23-watt signal. For comparison, my college radio station broadcast on a 20-watt signal and couldn’t be heard even a few blocks off campus.