11. "' Solar-powered calculators "'are hand-held electronic calculators powered by solar cells mounted on the device. 12. However, electronic calculators were rapidly improving in performance and gained larger market shares over time. 13. "The electronic calculator compresses creativity, " he once said. 14. Some hotels already use indoor changeable signs somewhat like the liquid-crystal displays on electronic calculators . 15. In 1971, the 1800 series was introduced as the first full line of electronics calculators . 16. Another character is seen using an electronic calculator . 17. Roberts bought out his original partners and focused the company on emerging market of electronic calculators . 18. "It's a combination electronic calculator and money counter. 19. Roberts bought out his original partners and focused the company on the emerging market of electronic calculators . 20. He was struck at how simple and elegant they were to use compared with high-end electronic calculators .
