In 1981 I'm not sure that it was so obvious that computers would take over the world, definitely not to the general public. For context, I was 10 years old at the time, and was the only kid in my school that owned a computer, a TI-99 that used a cassette drive as storage. It was so left-of-field to own a computer, that I remember not even really talking about it to my friends in school, because they had no context for why anyone would want such a strange device.