Get Hard Drives For Ease Of Use When Using The Accompanying Cd-rom Tutorials

A hard drive spins MUCH faster - a typical hard drive will spin between 5200 and 15000 RPM, while a CD will spin between 200 and 500 RPM and a DVD 1530 RPM. Therefore Hard Disc is Faster than CD ROM.

ROM and HDD are different. ROM(read only memory) cannot be changed once written plus it contains a piece of OS to retrieve data stored in HDD(i.e secondary memory) to main memory when you open windows.

1) Hard disk : It is an electro mechanical data storage device. Information remains intact even after switching off the computer. 2) CD ROM : It is a pre-pressed optical compact disk that stores data. It stands for Compact Disk : Read Only Memory.

In this simpler time, it was clear that the disk was the spinning media and the drive was the mechanics, head assembly,, and associated electronics. As storage densities have, over time, increased, disks and drivers are now combined into a single unit most commonly known as a Hard Disk Drive.

First would be that one is read optically, and the other magnetically. The next is the capacity of a Hard Drive is way more than a CD rom ( even if you extend it to BLU-RAY drives ). Next on the list is how data is read/stored/written. On CD it is in a linear way on a constant spiral.

ROM stands for Read only Memory. In a PC, this would be a small memory which stores the instructions given to the computer to boot the system. HDD stands for Hard Disk Drive and stores all the data you wish to have on your PC, from your Windows files to your Movies, Music and Games.

What Does a Hard Drive Do? A hard drive is the hardware component that stores all of your digital content. Your documents, pictures, music, videos, programs, application preferences, and operating system represent digital content stored on a hard drive. Hard drives can be external or internal.