In 1986, more than 40 percent of the world's data processing power came from pocket calculators. Almost 10 percent came from video game consoles, and only about 30 percent actually came from personal computers. That all started to change in the early 1990s, and by 2007, about 65 percent of computing power came from personal computers, and about 25 percent came from mobile phones.
More computing facts:
Yes. In 1986 I had a pocket calculator. Now most of my calculating is done in Excel on my computer, or on the computer's built-in calculator. The calculator on the mobile phone is also a handy tool.
For this same reason I no longer have a wrist watch. I check the time on my computer or phone.