Historically, yes. See: Hidden Figures -- all of the women who crunched numbers were called "computers." Also pick up a pre-WWII dictionary and the definition of computer is a person.
People are certainly a kind of computer. "What is a computer" can be an interesting - and basically philosophical - question which I think is the issue this lesson is supposed to raise. Does "toaster" fit this definition too?
To bring it in line with modern understanding of what a computer is probably involves getting specific about exactly what is being computed upon. Is it digitally stored information, or is it bread?