Programmable calculator to use magnetic strips were the HP-41C and TI-59. Continuous memory does not lose its content when the calculator is switched off. With continuous memory the user can, for example, change batteries without losing the entered programs. Compact Cassettes offered a simple, inexpensive alternative to magnetic cards. Usually, an interface module, such as the Casio FA-1, was used to connect the calculator to an ordinary cassette recorder and digital data were encoded as frequency-shift keyed audio signals. Sharp and Hewlett-Packard also sold dedicated micro- or mini-cassette recorders that connected directly to the calculator. These set-ups, while being more practical and
1957 Bandy World Championship 1957 Bandy World Championship The 1957 Bandy World Championship was contested among three men's bandy playing nations and was the first ever Bandy World Championship. Norway declined to take part due to the Soviet invasion of Hungary the year before. The championship was played in Finland from 28 February to 3 March 1957, as part of the fifty year anniversary celebrations for the Ball Association of Finland, which at the time was the governing body for bandy in Finland. The tournament was officially opened by President of the republic Urho Kekkonen. All games, which were only three, were played at