Product Description

The E0227-702-008 bubble memory card offered by Okuma belongs to the E0227 product group of similar offerings by the manufacturer. The memory card resembles a PC board. The product has a 4Mb x 2 data transfer rate. The device has two magnetic plates on its outside. These plates have orthogonal coils that connect them to the bubble chip as well as the user system. The unit was introduced in 1967 and was originally used in computers. It lost its popularity when the demand for hard disk storage in computers reduced drastically. The memory card does not take up much space because of its compact design and size.

In a bubble memory, the bubbles are moved to one end of the magnetic plate for conventional magnetic pickup reading and rewritten at the farthest edge of the plate. This helps to retain the memory throughout the plate. The bubble memory was widely used during the 1970s and 1980s in most machine tool controllers and video games. However, its popularity began to go down with the advent of faster and cheaper memory solutions of higher density. The lack of moving parts makes bubble memory makes it highly rugged when compared to disk memory. It is possible to ship this E0227-702-008 memory card worldwide.

The bubble memory is generally non-volatile and portrays high resistance to cosmic rays. The memory also consumes very less power. It is also termed as magnetic bubble memory because of its magnetic film. This memory is removable and capable of withstanding humidity, dust as well as high radiation and high temperatures. The bubble memory requires a complex controller for its functioning. The memory has a speed and capacity between the high speed and low capacity random access MOS memory and the low speed and high capacity rotating disk memory. This memory card comes with backup support for a period of one year.