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Summary: A short introduction to a antique calculator that I recently got
I first know about this thing when I was chatting with @jedishrfu a couple months ago, and I was fascinated by it. It functions like a soroban but looks way cooler and easier to carry around. Also, it is a important calculation tool before digital calculators exist.
So, I finally decided to buy one:
It works by sliding the middle bars with a stylo(the pen like thing) thus showing numbers from the center hole. It uses a clever mechanism to carry the digits from one row to another: You slide the stylo over the hook shape grove on top of every row and push the next row by a single digit.
Because mine is not in top condition and the sliding is quite stiff, but it is still functional and still amazes me. Although it's function has long been replaced by digital calculators, it's still a important artifact in the math history.
I first know about this thing when I was chatting with @jedishrfu a couple months ago, and I was fascinated by it. It functions like a soroban but looks way cooler and easier to carry around. Also, it is a important calculation tool before digital calculators exist.
So, I finally decided to buy one:
Because mine is not in top condition and the sliding is quite stiff, but it is still functional and still amazes me. Although it's function has long been replaced by digital calculators, it's still a important artifact in the math history.