OMRON 800 A very old calculator. 1971 Showa Retro For those who like it, collectors, take this opportunity. □ Description: Quoted from the internet The OMRON 800 is a one-chip calculator released in June 1971, the same time as the Busicom 120A. The main LSI element was developed by Omron R&D, a research company 100% owned by Tateishi Electric. Production was carried out in places with low labor costs, such as Puerto Rico. They succeeded in securing large-scale deals for overseas markets (300,000 units of 8-digit calculators in one month alone), which significantly reduced the cost of the LSI to $10 per unit (the OMRON 800 used 3 units). While the Busicom 120A was expensive at 89,800 yen, the OMRON 800 was priced at 49,800 yen, an astonishingly low price at the time, which caused a sensation and was called the "Omron Shock." The emergence of a chip that integrated input, calculation, memory, and display all into a single LSI made calculator manufacturing extremely easy, and various companies entered the calculator market. As a result, the price of calculators continued to decline rapidly, and the Casio Mini was released the following year for 12,800 yen. The Omron 800 is a historical calculator that triggered the low-price competition in calculators, which began with the advent of the one-chip LSI for calculators.