Why is Technology changing so fast?

It amazes me how fast technology has changed over the last century. People were astounded when handheld calculators came out. What would those people say if they saw that people today carry around these super advanced devices that act as computer as well as a phone.  Computers just started showing up in people’s homes in the 90’s, and even then they were mostly glorified typewriters. Today, just 2 decades later everyone has access to computer’s that are way more advanced and most people carry around smartphones like they are no big deal. In the last 60 years technology has changed and evolved at an incredibly fast state. Most people agree that each advancement speeds the rate of advancing, like a small snowball rolling down a hill builds up speed and size as it gathers more snow. But what was the big advancement  that lead to such a rapid increase of speed in advancement?  I think it was the invention of computers. If you think about it before computers life was a lot harder, everything had to be done by hand, you could not “save” a paper, you not just look things up if you did not know something you had to go find a book with the answer. Information in general had to be saved on paper, so business had to have archives of their work. Even things like cartoons, there was no computer animation, so each slide was hand drew. Live action films had to shot and stored on tapes, so to go back and look at footage you had to go through reels of film. In general things had to be organized perfectly or finding information and what you want would be impossible. There was no e-mail or messaging so you had to call people. If you went to the library and could not find the book, there was no check to see if it was checked out unless it was written down somewhere. Computers are everywhere nowadays. All new cars have computers in them, some factories are powered by computers,  when grocery stores had no computers in the check out every single thing had to be counted out and added up. Bar codes did not exist, shipping companies had to kept in consistent contact through phones.  Simple tasks were harder and took more time. But with the invention of computers, everything got faster. Keeping track of things was some much easier. New things were invented that helped computers move everything fast, scientist could spread research and do things more advanced, engineers could make and create things they had never even dreamed of. Life in general got easier and faster. Computers changed the world than any other device has.