Pictures of Storage Devices

Home >> Free Online Computer Training Course >> The Online Training Plan >> Computer Fundamentals >> Picture of Storage Devices


Some pictures of storage devices are featured on this page as a continuation of the first paper - computer fundamentals - in the Free Online Computer Training Course of our Lift Above Computer Illiteracy (LACI) programme.

Pictures of the internal components of the computer will also be considered on a different page with brief explanations of their functions and uses during the day-to-day operations of the computer.

Storage Devices Explained

Storage devices are computer components which are used to store data / information either for the purpose of immediate use or for use at a later time in the future. Storage devices may either be internal or external components.

One of the primary internal components of a computer system is the Random Access Memory (RAM). Additionally, the RAM is technically a storage device. It is an indispensable part of the computer as every part of it depends on it in some way.

Computer software or programs containing the boot record which are necessary for the computer to switch on and operate are loaded to the RAM, also known as the main memory, when the system is switched on.

It is obvious, therefore, that the RAM is the working memory of your computer. Consequently, without the presence of the RAM in a computer, the computer will not even be able to boot up or initialise the startup process at all.

Other examples of storage devices are hard disk drives, floppy diskettes (no longer in use), CD-ROMs, CD-Writer Drives, Flash drives, memory cards, and so on.

For a complete definition and explanation of the computer, as well as, its attributes, characteristics, functions and uses, please see the web pages: Definition of Computer and Computer Fundamentals.


Pictures of Random Access Memory (RAM)

The RAM makes the opening of applications or programs and the use of those applications to be very fast and to work efficiently. The easiest way to understand how the RAM works is to compare it to a work bench or a portion of the top of a table that is used as a working space for putting tools and other working materials.

However, data / information in RAM is not static. It keeps changing all the time as the computer is being used. And when a computer is shut down or switched off at the expiration of a computer session, all data within the RAM is wiped clean.

See some pictures of the RAM below.

picture of ram picture of ram
Fig. 11: Picture showing some Random Access Memory (RAM).




Being computer literate is certainly no longer an option. It is a necessity.

Therefore, do yourself a whole world of good. Be ICT compliant today. Enrol for the free online computer training course, actually participate in the 10-day course and graduate as a very knowledgeable computer user.


Click here to enrol and benefit fully from the
Free Online Computer Training Course
.


Explanations and Pictures of the ROM

Read-only memory (ROM) is a class of storage medium used in computers and other electronic devices.

The Read Only Memory (ROM) is a more permanent memory which contains machine-related information or firmware on the functioning and operation of the computer, pre-programmed into it from factory by the manufacturers.

Data stored in ROM cannot be modified, or can be modified only slowly or with difficulty, so it is mainly used to distribute firmware (software that is very closely tied to specific hardware, and unlikely to need frequent updates).

However, the ROM or the RAM cannot be used by the computer user for the purpose of data storage. Hence, the need for storage devices which the computer user can make use of for the purpose of data storage for immediate and future use arises.

Pictures of the ROM are shown below.

picture of rom picture of rom
Fig. 12: Picture showing some Read Only Memory (ROM)

Explanations and Pictures of Hard Disk Drive

The Hard Disk Drive (HDD) is the primary storage device of the computer. All programs, including the system software and all application softwares are installed on the hard disk drive.

Though both the HDD and the RAM are both internal components, there is a huge difference between the two of them.

So, what is the difference between the HDD and the RAM?

In the first place, a major difference between the HDD and the RAM is that the computer works directly with the RAM and will not even boot up without the RAM, whereas the computer will work normally and boot up without the HDD.

Additionally, the RAM is not designed to store data / information permanently. That is why if the computer is switched off, all information on the RAM will be erased completely. The HDD, however, is designed to store data permanently on the computer.

Another major difference is that since the hard disk is designed to handle large data storage, it is larger in size than the main memory. While the lowest size of the main memory or RAM may be 128mb, the lowest size of the hard disk may be 40 megabite (mb).

On the other hand, the largest size of the main memory may be 4 gigabite (gb), while that of the hard disk could be as high as 500 gigabite (gb).

Pictures of the Hard Disk Drive is shown below.

picture of hard disk drive - back picture of hard disk drive - top
Fig. 13: Picture showing Hard Disk Drive (HDD) - back and front.


Flash Drive, Floppy Diskettes and Memory Cards

The USB flash drive is a remarkable departure from the use of floppy diskette drives in data storage. In the past, floppy diskettes used to be the primary backup device for storing data.

Not so anymore. Aside from being too small in size (1.44 megabite) to serve as a reliable backup medium for data storage, it was prone to being easily damaged.

Flash drives have been produced to serve as a convenient alternative to floppy diskettes - since they are not easily damaged as diskettes were and some are as large as 8 gigabite in size. The use of floppy diskettes as storage device is now a thing of the past.

Memory cards, too, are storage devices that are used for data backup and the storage of data for future retrieval and use. Like flash drives, they are more durable and have larger space for data storage.

Pictures of the flash drive, memory card, floppy diskette drive, and floppy diskettes are shown below.

picture of flash drive picture of memory card
Fig. 14a: Picture showing a flash drive and memory card.

picture of floppy diskette drive picture of floppy diskette
Fig. 14b: Picture showing a floppy diskette drive (FDD) and floppy diskette.


CD-ROM Drive / CD-RW Drive

The Compact Disc Rewritable (CD-RW) Drive is a storage device used for burning data, audio and video files onto disc. It also has the added function of being able to perform the function of the ordinary CD-ROM drive.

On the other hand, the Compact Disc Read Only Memory (CD-ROM) drive is a multimedia device which is used for reading of data CDs and playing back audio and video files.

Pictures of CD-ROM Drive and CD-ROM disc Drive are shown below.

picture of cd rom drive picture of cd rom
Fig. 15: Picture showing the CD-ROM drive and CD-ROM disc.


Pictures of Other Computer Hardware

So far in this lecture of the Free Online Computer Training Course on this website, we have considered pictures of storage devices with brief explanations of their functions and uses in the computer.

We concentrated principally on the storage devices of the computer in this lecture.

In our next lecture, we will consider pictures of other computer hardware components together with explanations of their importance or significance, as well as their functions and uses in the computer.







Being computer literate is certainly no longer an option. It is a necessity.

Therefore, do yourself a whole world of good. Be ICT compliant today. Enrol for the free online computer training course, actually participate in the 10-day course and graduate as a very knowledgeable computer user.


Click HERE to enrol and benefit fully from the
Free Online Computer Training Course
.





Click HERE for the detailed training plan of the
Free Online Computer Training Course
.









Subscribe to
e-Business Success Digest - a 6-day FREE Mini Course

Follow
Kome Computers Blog too




Stay Connected!

Follow Kome Computers on Twitter
Follow Us on Twitter


Become a fan on Facebook
Become a Fan on Facebook


Visit Kome Computers Blog
Visit Kome Computers Blog