Programmable calculator: Difference between revisions

Revision as of 16:45, 12 November 2022

Revision as of 16:40, 23 April 2023

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{{further|Compact Cassette#Data recording}}

[[Compact Cassettecassette]]s 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 keying|frequency-shift keyed]] audio signals.<ref>Description of the [http://www.voidware.com/calcs/fx501p.htm FX-502P and FA-1] on [http://www.voidware.com/calcs/museum.htm Voidware]</ref>

[[Sharp Corporation|Sharp]] and [[Hewlett-Packard]] also sold dedicated [[Microcassette|micro-]] or [[Mini-Cassette|mini-cassette]] recorders that connected directly to the calculator. These set-ups, while being more practical and reliable, we'rewere also more expensive.

=== Semi-continuous memory ===