Sony TC-558

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Brand: Sony

The Sony TC-558 is an electronic calculator released by Sony in the 1970s. It was part of Sony's popular line of pocket calculators, which also includes the TC-80, TC-110, and TC-200 models.The Sony TC-558 has a four-function calculator (addition, subtraction, multiplication, and division) and uses solar cells for power. Its battery can be recharged using a solar panel, which is attached to the top of the calculator cover. This unique feature made it a high-profile product during its time, as it was one of the few calculators available that did not require the user to replace batteries frequently.The Sony TC-558 utilized a horizontal strip LCD (liquid crystal display) that displayed eight digits and two functions, making it easy to read and follow calculations. It also had a button for percentage and another for clear, as well as an on/off switch. Unlike other calculators of the time, the Sony TC-558 did not have a carry-out feature, making it less advanced than some of its competitors.Overall, the Sony TC-558 was a popular calculator during its era because of its unique solar charging feature, compact design, and functional display. It became a significant product in the history of pocket calculators, and today, it holds a modest value as a collector's item.