Note
Capacity: The Intel 7110-4 is a 1-megabit memory module, which means it can store up to 1,048,576 bits of data1.
Technology: It utilizes magnetic bubble technology, where small magnetized areas (called “bubbles” or “domains”) represent individual bits of data. These bubbles move along parallel tracks under the influence of an external magnetic field2.
Architecture:
The memory is organized into a 512-bit page with 2048 pages.
It follows a true binary organization and employs a major track-minor loop architecture. Redundant loops with on-chip loop maps and index blocks allow for efficient read and write operations1.
Performance:
The average access time is 40 milliseconds. The maximum data rate is 100 Kbit/sec1.
Physical Characteristics:
The Intel 7110-4 comes in a 20-pin, dual in-line leadless package.
It offers a small physical volume and low power consumption per bit1.
Applications:
Bubble memory was used in the 1970s and 1980s in applications where its non-moving nature was advantageous for maintenance or shock-proofing reasons. However, the introduction of faster semiconductor memory chips and improvements in hard-drive capacity rendered bubble memory uncompetitive by the late 1980s2.
In summary, the Intel 7110-4 bubble memory was a high-density, non-volatile storage solution based on magnetic bubble technology. Although it had its niche applications, it eventually faded from use due to advancements in other memory technologies.