Magnetic disk drives
Disk drives came into being as random-access file-storage devices for digital computers. They were prominent in early experiments with digital audio, but their cost at that time was too great in comparison to emerging tape technology. However, the explosion in personal computers has fuelled demand for low-cost high-density magnetic disk drives and the rapid access offered is increasingly finding applications in digital audio. Optical and magneto-optic (MO) disks are considered in Chapter 12.
10.1 Types of disk drive
Once the operating speed of computers began to take strides forward, it became evident that a single processor could be made to jump between several different programs so fast that they all appeared to be executing ...