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
Calculator (band) EP on Count Your Lucky Stars titled "Calc". Calculator (band) Calculator was an American emo band from Westchester, Los Angeles, California. Calculator self-released a split with the band Moldar in mid-2009. Later that year, Calculator released their first full-length album titled "These Roots Grow Deep" on Melotov Records. Calculator released a 7" in 2011 titled "New Forms". In 2014, Calculator signed with Count Your Lucky Stars Records and released their second full-length album titled "This Will Come To Pass". In June 2014, Calculator was featured on a four-way split titled "The Sound Of Young America" with the bands Capacities, Innards,