![]() Solar energy is used to recharge or supplement this battery, extending its life significantly. The second type is dual-powered calculators that have a small battery in addition to their solar cells. The first is only solar-powered and does not have a separate or back-up battery. There are two main types of solar-powered calculators. Solar-powered calculators are very common, as nearly all basic calculators use solar cells. Solar cells, also known as photovoltaic cells, use energy from light (artificial or real) and turn it into electricity used to power the calculator. Solar-powered calculators are small, hand-held devices that use energy from solar cells to function. They are extremely wide-spread nowadays, as most cheap calculators being sold are solar-powered. The current solar-powered calculators are smaller, cheaper, and faster than the first solar-powered calculators. Over the years, they’ve changed and progressed with technological advances. The introduction of solar-powered calculators in the 1970s was revolutionary and was seen as a sign of the world moving to renewable energy sources. If you dig up your calculator, you are likely to find that as if by magic, it still works! Unlike many electronic devices that have very short battery life spans, calculators, and specifically solar-powered calculators have a long lifespan. Most of us are very familiar with the common hand-held calculator used for these simple arithmetic tasks and probably have at least one laying around somewhere in our house. Everyone has had the need for a calculator at some point in their lives, be it at school, work, or for everyday calculation tasks such as doing their taxes. ![]()
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