The computer
I didn't get my first desktop computer until 1998, so I don't know--was the program Sheldon was using to ask the computer for help and a female voice was answering, was that a real thing in 1989?
I thought it was funny how they portrayed it pretty realistically, the uses they had for the computer. I can remember friends having a computer that early on and it was like they showed, there wasn't a whole lot for the average person to do like there was later on after Windows was invented. I remember women putting recipes in the computer because they couldn't think of anything else to do.