![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhjrczVvkm3UZ9ZnRQDUetJ9qxcJBqHFUxDoMXXcsOcMFByv_ZgQ7yatYrzPdK4PcI0ESpq_ab04YnojN40EBrA7JCBTCc8RwOI5MRREz3qsqW_4xIuCNcQbEoeThWSYeO0J9UvnxG_FSsX/s400/compeng.jpg)
Indeed, the advancements and innovations in computers have changed our ways of computing and data prcessing. In my case, I experienced using some of the computing tools shown in the image above. I still remember when I was a kid, my father taught me how to use the abacus. During my high school days, we were taught how to use the slide rule in our chemistry class. Then the scientific calculator was born just before I graduated in high school. During my college years, we used computer cards in our computer programming classes using the FORTRAN language. Then I also used a programmable calculator using BASIC language. My first computer was an Apple Computer whose memory is in kB. Today, we have computers which are fast and with almost unlimited memory space in terabytes.