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
All Over the World (Electric Light Orchestra song) All Over the World (Electric Light Orchestra song) "All Over the World" is a song by the Electric Light Orchestra (ELO). It is featured in the 1980 feature film "Xanadu" in a sequence with the film's stars Olivia Newton-John, Gene Kelly, and Michael Beck. The song also appears on the soundtrack album "Xanadu", and was performed in the 2007 Broadway musical "Xanadu". Released after the single "Xanadu" (a collaboration with Olivia Newton-John), this was the third Top 20 ELO single released from the 1980 soundtrack, peaking at number 13 on the US "Billboard" Hot 100. The sequence in the "Xanadu"