Calculator This led the way to the first credit-card-sized calculators, such as the Casio "Mini Card LC-78" of 1978, which could run for months of normal use on button cells. There were also improvements to the electronics inside the calculators. All of the logic functions of a calculator had been squeezed into the first "calculator on a chip" integrated circuits (ICs) in 1971, but this was leading edge technology of the time and yields were low and costs were high. Many calculators continued to use two or more ICs, especially the scientific and the programmable ones, into the late 1970s. The
Mahindra Electric Mahindra Electric Mahindra Electric Mobility Limited, formerly known as the Reva Electric Car Company, is an Indian company based in Bangalore, involved in designing and manufacturing of compact electric vehicles. The company's first vehicle was the REVAi electric car, available in 26 countries with more than 4,000 of its different versions sold worldwide by mid March 2011. Reva was acquired by Indian conglomerate Mahindra & Mahindra in May 2010. After the acquisition, the company launched the electric hatchback e2o in 2013. Today, the company sells electric vehicles in different segments – the electric CitySmart hatchback e2oPlus, the electric sedan eVerito