14-B

Manufactured in	1959
Manufactured by	CASIO COMPUTER CO., LTD.
Owner	CASIO COMPUTER CO., LTD.
Location of historical materials	CASIO COMPUTER CO., LTD. Headquarters 6-2, Hon-machi 1-chome, Shibuya-ku, Tokyo 151-8543
Visitor information	visit by appointment only
Contact	Sustainability Promotion Office　E-mail: csr-report@casio.co.jp

The Casio 14-B, which is a relay-type calculator was developed after the 14-A, the machine commercialized with Casio's incorporation. The relay is a switch that uses an electromagnet, and earlier on was widely used in applications such as telephone switchboards. It was also used in early computers, which typically operated in a clean room with constant temperature and humidity because the relays included contacts. Casio successfully developed a calculator for general offices that could do basic operations up to 14 digits, and had a small enough number of relays so that the calculator could fit into a small desk still taking into consideration reliability and protection from dust. The 14-A, first sold in 1957, was popular because it was less noisy than electric or mechanical calculators, and it was used in government offices, brokerage houses and administrative offices in companies in general. 14-B was commercialized in 1959 at a price of 650,000 yen to meet the need to calculate square roots in technical or statistical calculations. The 14-B was adopted in many universities and technical research organizations. A 10-key interface was used, and as in current calculators, 14 digits could be displayed along with one constant with up to seven digits. In addition, two constants of up to five digits could be stored in its memory, and the machine featured automatic summation and square root calculation. The 14-B is desk-sized with dimensions; width 1080 mm, depth 445 mm and height 780 mm, contains about 350 relays internally, and weighs 140 kg.