to magnetic data storage, however, is very similar for the ‘The basic approach Magnetic storage, different types of media. A read-write head moves very close to the magnetic e.g. hard disk drive surface - the distance is often no more than tens of nanometers. The head is able to detect and modify the magnetization of the material. The magnetic surface is divided into very small regions, each of which has a mostly uniform magnetization. As the head moves relative to the surface, the changes in magnetization from region to region are detected and recorded as zeros and ones. Different technologies vary in how the head moves relative to the surface of the media and how the regions on the media are organized, but the basic principle is the same.’ (Source: Optical storage, e.g. CD/DVD drive Solid state storage, e.g. memory stick Week 8 Lesson 1 activities
Magnetic storage, e.g. hard disk drive ‘The basic approach to magnetic data storage, however, is very similar for the different types of media. A read-write head moves very close to the magnetic surface - the distance is often no more than tens of nanometers. The head is able to detect and modify the magnetization of the material. The magnetic surface is divided into very small regions, each of which has a mostly uniform magnetization. As the head moves relative to the surface, the changes in magnetization from region to region are detected and recorded as zeros and ones. Different technologies vary in how the head moves relative to the surface of the media and how the regions on the media are organized, but the basic principle is the same.’ (Source: Optical storage, e.g. CD/DVD drive Solid state storage, e.g. memory stick Week 8 Lesson 1 activities
gcse_computer_science_year11_autumn_term_activities.docx