Bubble memory
Updated: 09/03/2019 by Computer Hope
Bubble memory is a non-volatile memory composed with a thin layer of material that can be magnetized in only one direction. When a magnetic field is applied to an area not magnetized in the same direction, the area is reduced to a smaller circle, or bubble. When bubble memory was introduced it was widely believed that it would become a leading memory technologies, but these promises were never fulfilled.
Because other non-volatile memory types, such as EEPROM (Electrically Erasable Programmable Read-Only Memory) are faster and less expensive than bubble memory the technology was never widely used. However, it was available as a 128 KB memory cartridge in the Sharp PC-5000, a PC-compatible laptop released in 1983.