Question: Did Sega and Timex Sinclair both develop electronics?
Sentence (from "Timex Sinclair"): It was Timex of Portugal, though, that took on the R&D and the local manufacturing of the models to be exported to the U.S. Although both Timex of Scotland and Timex of Portugal were full subsidiaries of Timex, internal rivalry, whether unintended or purported, meant there was little sharing between the two plants.
Relevant evidence: No