1 bit 1 Hz digital

[PRR]

1-bit CPU for 'super low-performance computer' launched – sells out promptly
Device is programmed with DIP switches to operate an LED. That's it.
https://www.tomshardware.com/pc-components/cpus/1-bit-cpu-for-super-low-performance-computer-launched-sells-out-promptly

[diffeq]

Slightly insulting to call this a computer. A 4017 sequencer does virtually the same thing. And has "10 bit ROM"

[duck_arse]

sounds like a stopping machine, without the paper tape.