History of science and technology in Japan the idea to Kihara. The Walkman was commercially released in 1979. Kei cars are a category of small automobiles invented in Japan, including passenger cars, vans, and pickup trucks. They are designed to exploit local tax and insurance relaxations, and in more rural areas are exempted from the requirement to certify that adequate parking is available for the vehicle. The world's first all-electric compact calculator was the Casio Computer Company's Model 14-A, released in 1957. The first electronic desktop calculator with on-board memory was the Casio 001, released in 1965. In 1967, Casio released the AL-1000, the world's first programmable
Calculator and built at the Elektronika factory in Sofia. The name derives from "ELektronen KAlkulator", and it weighed around . It is the first calculator in the world which includes the square root function. Later that same year were released the ELKA 22 (with a luminescent display) and the ELKA 25, with an in-built printer. Several other models were developed until the first pocket model, the ELKA 101, was released in 1974. The writing on it was in Roman script, and it was exported to western countries. The "Monroe Epic" programmable calculator came on the market in 1967. A large, printing,