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
Solar Electric Power Company Solar Electric Power Company Solar Electric Power Company is a manufacturer of solar lighting and remote solar power stations that utilize compact fluorescent lamps CFL, light emitting diodes LED, metal halide, induction, low pressure sodium, and high pressure sodium and is based in Stuart, Florida. Steve Robbins, the founder and president, designed and patented the first commercial solar street light. Single crystal solar panel are used in solar power assemblies which provide maximum efficiency in the smallest size available. The solar panel backs are covered by vented aluminum panel pans to protect against weather, vandalism, and other types of damage.