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
Cloudy Cloud Calculator "finest and most unusual moments" and "highly inventive, restrained pop". "Musician Guide" called the album's tracks "wonderfully cute, all-synthesizer musings." Cloudy Cloud Calculator Cloudy Cloud Calculator is the third studio album by Japanese musician Takako Minekawa, released on December 10, 1997. It was released by Polystar in Japan and by Emperor Norton Records in the United States. Minekawa played almost every instrument on the album and produced, arranged, wrote, and sang nearly all its songs. Minekawa toured in the United States to support the album. The album "Ximer", released in 1998, featured remixes of "Cloudy Cloud Calculator" by artists including