I didn't know they used to call computers "ordenadores" in Portugal. Interesting.
Edit: I just checked wikipedia, and this is described there: https://en.wikipedia.org/wiki/Byte
Serial ports and modems often operated in that mode, and UUCP influenced mail and newsgroups to only use 7-bit data; requiring encoding for data with the high bit set. Protocols that specify octets are dealing with 8-bit bytes and don't have to deal with that.
I was used to reading everything in English, so Brazilian computer books and magazines would always read strange to me. Then in the 90s everything just moved to American vocabulary.
The strangest word I recall in this context is the use of "alça" for handle.
Never read another Brazilian technical translation ever agin.