Amachukwu Innocent's Blog

Magnetic storage media depend on the magnetic properties of certain materials (iron and nickel alloys being the most common). Magnetic material is coated on the surface of a disk or tape that can be magnetized in such a way as to represent a l or a 0. Many hard disk drives are made up of more than one disk and these disks are known as platters. Each platter is made from glass, ceramic or aluminum coated in a nickel alloy that can be magnetized. In the case of tape, plastic that is coated in a magnetic material is used to store the data. Fixed/internal hard disk drive (HDD) Fixed hard disk drives are available on all computers and are the main method used for data storage. On a PC this is usually a fixed hard disk with read/write heads allowing data to be written to or read from the disk surface. The disk surface is coated in a magnetic film that allows data to be stored by altering the magnetic properties to represent binary Is or Os (the fundamental units of computer memor...

In recent times both the CD and DVD are showing signs of becoming obsolete.  Many computer systems now come with USB connectors only and no DVD or CD drive. The main method of transferring files between devices has become flash memory. Many people now store all their music in the following ways: • on hard disk drive systems (set up as sound systems) • in MP3 format on:  a computer/tablet  their mobile/smartphone  a portable music player (such as an iPod) • using the 'cloud' to store all their files so they can access their music from anywhere in the world • By 'streaming' their music from  the internet, provided the user has an internet connection they can access music through a laptop computer, mobile phone, tablet or any other receiving device. It is a similar story for movies, where streaming is becoming increasingly common. Many television sets are now set up as "smart' televisions - this means it is now possible to simply stream movies or te...