What is Bubble Memory ?
Bubble memory is a type of non-volatile memory that makes use of a thin layer of magnetic material that holds small magnetized areas known as bubbles or domains, which are able to store one bit of data each. The magnetic material is arranged into parallel tracks where the bubbles can move along through the action of an external magnetic field. Bubble memory was a promising technology in the 1980s, offering similar density to hard disk drives and similar performance to core memory, but major advancements in both hard disk and semiconductor memory chips pushed bubble memory into the shadows.
Bubble memory is also known as magnetic bubble memory.