Introduction

Introduction For Storage Device

Storage Devices are the data storage devices that are used in the computers to store the data. The computer has many types of data storage devices. Some of them can be classified as the removable data Storage Devices and the others as the non removable data Storage Devices.

The memory is of two types; one is the primary memory and the other one is the secondary memory.
The primary memory is the only one directly accessible to the CPU, often refferred to simply as memory. Secondary memory is not directly accessible by the CPU. It is non-volatile. The volatile memory is the kind of the memory that lose the information or data when not powered and the non-volatile memory is the one where it does not lose the data when the device is powered down. Basically when we talk about the data storage devices it is generally assumed to be the secondary memory.
The secondary memory is used to store the data permanently in the computer. The secondary storage devices are usually as follows: hard disk drives – this is the most common type of storage device that is used in almost all the computer systems. The other ones include the floppy disk drives, the CD ROM, and the DVD ROM. The flash memory, the USB data card etc.
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