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Bubble Memory

By Mel Hawthorne

Bubble memory is a type of memory that uses materials that can only be magnetized in one direction, rather than two. A magnetic field is set up, and approached at right angles to the plane it is based on, materials form what is referred to as a bubble – a tiny circle. This causes a slight difference between the bubbled and magnetized areas and the rest of the pane. This difference can be used in order to represent digital data.

 

 

Technipages Explains Bubble Memory

This type of memory, named after the small bubbles that are formed, is non-volatile, which means that it isn’t deleted or lost when the machine is powered off. Other types of memory often do delete data stored in it when power to the machine is lost or cut off. This is referred to as volatile RAM, and has its own advantages and disadvantages. Bubble memory is used in some computers in order to store data in between operating sessions – particularly in portable machines. It is considerably slower than other types of RAM technology. Competing types of tech, such as EEPROM memory, or flash-erasable and programmable read-only memory is faster, and by quite the margin at that.

Each bubble, sometimes referred to as a domain, contains exactly one bit of data in it. That means that a large collection of them are arranged next to each other in order to make up the larger memory module. Bubble memory had its heyday in the 1980s, when it set out to be a promising alternative to existing technologies. It ended up quickly proving inferior to other types of memory, especially when it came to speed and price point.

Common Uses of Bubble Memory

  • While bubble memory initially seemed to be a good choice, it didn’t withstand the test of time.
  • Bubble memory quickly proved less efficient and less cost-effective than other types.
  • Non-volatile RAM types like bubble memory don’t lose the info stored in them when their power supply is cut off.

Common Misuses of Bubble Memory

  • Bubble memory is a type of virtual memory that bubbles and stores information long term.

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Who’s Behind Technipages?

Baby and Daddy My name is Mitch Bartlett. I've been working in technology for over 20 years in a wide range of tech jobs from Tech Support to Software Testing. I started this site as a technical guide for myself and it has grown into what I hope is a useful reference for all.

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