When you search any data in the computer, then your computer's hard disk rotates at thousands of rotations per minute, causing delays. And because of storing large amounts of data, the hard disk slowdown of your computer works.ĭue to storing a large amount of data on a computer hard disk, if you have to retrieve a file, then you have to search that file in your computer which takes a lot of time because all the data on the hard disk is scattered. Your computer hard disk stores large amounts of data. There are many basic and main functions of random access memory, which are given below.