storage devices

The computer functions

A computer is basically a device whose primary function is to process large amounts of data with great speed and accuracy, task is accomplished by hardware components, ie the physical part, and software, which are programs. A PC can perform many complex tasks, and for that uses a set of instructions, the aforementioned software, that basically are orders that the computer must process through the hardware, producing an output data an understandable format for its users.

As mentioned, a computer is composed of two subsystems, hardware and software, where the first of which comprises the computer itself and all peripherals input and output, including keyboard, mouse, monitor, printer and other, while the software subsystem includes the operating system, which is responsible for translating what we do to PC language, and all user programs, i.e. office suites, design software, modeling, mathematical software, and many others.

Computer functions

What does “process information”?

The action of “process” is related to the act to modify or transform something from its original state to a new one. The computer can process information from different types: text, numbers, images, sounds, and many others sources. The information you work the computer must be entered by the user.

The computer ability for data process can be summarized through the following basics:

Store information:

The computer has the ability to store, in a small space, large amount of information that otherwise would have to print in thousands of paper sheets.

Computer functions

Organize information:

This feature gives the user the option to sort or organize the information according to their own needs and requirements. By this way, we can find and examine documents and data the number of times we want.

Retrieve Information:

His great ability to store information would be useless if we cannot quickly and easily retrieve and examine it. In this regard, the computer offers us the possibility to check instantly and accurately any information you have previously saved on it.

Computer functions

Transmitting information:

One of the most important features of the computer is the ability to share information between users quickly, securely and accurately. This fantastic feature depends on whether our computer is connected to the Internet or local network.

Storage devices

Basically, a storage unit is a device able to read and write data for the purpose of permanent storage. Today we have available many classes and categories of this storage devices, and can find in computer stores a wide variety, both internals and externals, capable of storing an amount of data unthinkable in the past.

Also called secondary storage, these devices are capable of storing data inside, as in the case of hard drives, memory cards and USB flash drives, or as in the case of optical storage drives such as Blu-Ray, DVD or CD disc, which store data externally on a removable media, such as disk.

Storage devices

This type of device is the safest and most convenient way to store a significant amount of information easily and permanently. Notably thus we can also maintain the data always available, since such media do not need power to maintain the stored information.

The ability to store information for later retrieval simple is an essential link in any modern computer system, and the storage devices play a major role in the development of technology, because without them it would be impossible even attempting any project, however small it may be.

Storage devices

Types of storage devices

Currently there are three types of devices we use in everyday tasks to store and move information

Optical: CDs, DVDs, Blu-Ray, etc.

Magnetic and mechanical: Hard disks, magnetic tapes, diskettes, etc.

Electronic (no mechanics parts inside): SSD, flash drives, memory cards, etc.

Storage devices

Storage memory and RAM

One of the mistakes that most often incurred by computer users is to confuse the RAM of the PC with a storage device, but this is not true because the RAM only stores data temporarily, for the purpose that these data are processed by the CPU. The data in the RAM is never stored permanently.