“Computer” remains today a word that means any computational device. Without any context, it’s safe to assume programmability, but that’s just a reasonable assumption and not a definition of the word computer. People are making fixed-function computers today, and @orbital-decay and I already gave examples of them here. I happen to work on fixed-function non-programmable hardware that is part of a widely used commodity processor today, a sub-core that does arbitrary amounts of computation without being instruction driven and can’t be used for general purpose computation.

If a computer is a machine that helps me compute, then I'd argue an electronic calculator fits the definition regardless of the century:

https://en.wiktionary.org/wiki/compute

I'd be inclined, though, to exclude "non machine" counting tools such as an abacus.