Casio Collector
Calculators
My collection of Texas Instruments graphing calculators. The TI-81 was a class requirement in one of my high school math classes, circa 1991. There was an option to borrow these from the school, but this is the one I purchased and it still works fine all these years later. Next is the TI-85 which I bought during the summer between highschool and college, in 1992. As luck would have it, the TI-85 also became a class requirement for my first math class in college, so it turned out to be a worth while purchase. Our instructor was amazed by this calculator and our "tests" tended to be more about writing programs for the TI-85, rather than solving actual calculus problems. Third one is the TI-86 purchased several years later during my first job out of college. At the time, my wife was using my TI-85 at her job, so I needed another calculator with units conversion capabilities. The silver TI-84 Plus Silver Edition was found at a garage sale a couple of years ago for $5 USD and I could not pass up that bargain, even though I had no practical use for it. It still has the price tag on it to remind me of the good deal. The TI-85 and TI-86 are much better in my opinion, I love being able to do conversions directly from the main screen without having to load up an application like on the TI-84. Missing from this collection is the massive TI-92 that I also had during college. I spent many hours writing useless programs such as draw poker, and sold it shortly after graduation.
Calculators
My collection of Texas Instruments graphing calculators. The TI-81 was a class requirement in one of my high school math classes, circa 1991. There was an option to borrow these from the school, but this is the one I purchased and it still works fine all these years later. Next is the TI-85 which I bought during the summer between highschool and college, in 1992. As luck would have it, the TI-85 also became a class requirement for my first math class in college, so it turned out to be a worth while purchase. Our instructor was amazed by this calculator and our "tests" tended to be more about writing programs for the TI-85, rather than solving actual calculus problems. Third one is the TI-86 purchased several years later during my first job out of college. At the time, my wife was using my TI-85 at her job, so I needed another calculator with units conversion capabilities. The silver TI-84 Plus Silver Edition was found at a garage sale a couple of years ago for $5 USD and I could not pass up that bargain, even though I had no practical use for it. It still has the price tag on it to remind me of the good deal. The TI-85 and TI-86 are much better in my opinion, I love being able to do conversions directly from the main screen without having to load up an application like on the TI-84. Missing from this collection is the massive TI-92 that I also had during college. I spent many hours writing useless programs such as draw poker, and sold it shortly after graduation.