Hard drives

What is a hard drive and where does it come from?

A hard drive is a storage device for computers that has nothing supporting it. It can hold a large amount of data. The hard disk was invented by a team led by Rey Johnson on September the 13th 1956. Before that hard disks had already been invented but they were large devices that only had a capacity of 5 to 20 megabytes which was considered large. Now they

Optical Drives

An optical drive is similar to a hard drive but uses laser light or electromagnetic waves as part of process of reading and writing data.
Inside a Hard Disc Drive