Most engineers and aspiring engineers like myself also become very fond and attached to their equipment, including calculators. |
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The CASIO fx-570MS is not sold in North America. But it is a very popular model with international students coming to Canada and the United States from Asian, Middle Eastern, and North African countries. Such students will greatly appreciate a guide to replace the battery of their beloved calculator easily. |
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Also, most international students coming to Canada and the United States from developing countries are not in the habit of performing technical repairs while in their home countries. Semi-skilled and informal labour is readily available, often performing simple repairs at rates cheaper than buying a replacement. However, the dynamics change when in North America. Technical repairs often cost more than buying a replacement. |
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Given these devices' sentimental nature, as already explained, some may prefer to replace the battery and continue using their calculators. Given instructions are readily available. |
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Good Luck and Happy Fixing !! |