Hard Drive Read/Write Head

About Hard Drives: Hard disk drives were invented in the 1950s. Originally the disks were about 2 feet in diameter. Sometimes they stacked on top of each other to make a stack of disks. The motors to spin the disks and read/write heads were in a separate assembly. The stacks of disks could be removed and replaced with another set. The disk in the display could hold about 1GB of data. The read/write heads could be moved back and forth on a set of pivoting arms to write data in concentric circles called tracks. If it was a multi-platter disk, the same tracks above and below each other were called cylinders. Blocks of data in a track were called records. To find data on the disk you had to know the address of it, which was the cylinder, track, and record numbers. The platter is made from glass with a superfine layer of ferrous coating. About this Artwork: The background image is of a single read/write head at the very end of the disk-facing side of the arm. As the disks spin at thousand