KNOWLEDGE OF PC
Saturday, October 25, 2008
Are Brazilians Thick?
Classification of Storage Devices
Sequential access Random access
Storage Device Types
Memories:
ROM Memory
Sequential access Random access
Storage Device Types
Memories:
ROM Memory
is read-only memory, and serves to store the program basic initiation, installed at the factory. This program goes in f unction is lit as the computer and their first function is to recognize the devices (including memory work ) devices .
Ram Memory
This is called random access memory is, as can be read also pu ede 
written in it, has the characteristic of being volatile, ie , which only operates while the computer is turned on. It is stored both the instructions you need to run the microprocessor Sadore the information to introduce and want to process, and the results obtained from this. Auxiliary
and Memories: By the very nature of the use of ROM and RAM management, several media storage, the most common are: The hard, floppy disk or floppy disk, etc ...
measures
Information Storage
Byte: A unit of information consisting of 8 bits, in computer processing and storage, equivalent to a single character , such as a letter, number or punctuation mark.
Kilobyte (Kb) is equivalent to 1,024 bytes.
Megabyte (Mb): A million bytes or 1,048,576 bytes.
Gigabyte (GB) equals one billion bytes.
Magnetic Devices Magnetic Tape: It is formed by a strip of plastic material ferromagnetic material coated on the tape is recorded characters in the form of combinations of points on tracks parallel to the longitudinal axis of the tape. These tapes are sequential media, this is a problem because access to certain information is necessary to read all that preceded it, with the consequent loss of time.
written in it, has the characteristic of being volatile, ie , which only operates while the computer is turned on. It is stored both the instructions you need to run the microprocessor Sadore the information to introduce and want to process, and the results obtained from this. Auxiliary and Memories: By the very nature of the use of ROM and RAM management, several media storage, the most common are: The hard, floppy disk or floppy disk, etc ...
measures
Information Storage
Byte: A unit of information consisting of 8 bits, in computer processing and storage, equivalent to a single character , such as a letter, number or punctuation mark.
Kilobyte (Kb) is equivalent to 1,024 bytes.
Megabyte (Mb): A million bytes or 1,048,576 bytes.
Gigabyte (GB) equals one billion bytes.
Magnetic Devices Magnetic Tape: It is formed by a strip of plastic material ferromagnetic material coated on the tape is recorded characters in the form of combinations of points on tracks parallel to the longitudinal axis of the tape. These tapes are sequential media, this is a problem because access to certain information is necessary to read all that preceded it, with the consequent loss of time.
Magnetic Drums:
cylinders are formed by magnetic material capable of retaining information, this is recorded and read by a head whose arm moves in the direction of the axis of rotation drum. Access to information is direct and not sequential. 
Hard: These are currently the main storage subsystem in the computer systems. It is a device responsible for storing persistent information on a computer, is considered the system storage 's largest computer and it saves the files programs.
diskette or floppy
also a floppy disk or diskette (in English floppy disk), is a type
of data storage device comprising a circular piece of a magnetic material that allows recording and reading data, thin and flexible (hence its name), contained in a thin shell square or rectangular plastic. The disks are usually used for 3 ½ to 5 ¼ inches, used in computers or computer s personal, although currently the 5 ¼-inch disks are obsolete.
Optical Device
The CD-R:
is a CD of 650 MB of capacity that can be read many times as desired, but whose content can not be modified once it has been recorded. Since you can not be erased or rewritten, they are suitable for storing files or other joint information unchanged.
CD-RW has the capacity of CD-R with the difference that these discs are rewritable giving them an advantage. CD-RW drives can record data on CD-R and CD-RW discs and can also read CD-ROM and CDs audio. The interfaces supported are EIDE, SCSI and USB .
DVD-ROM:
is a compact disc with a capacity of storing 4.7 GB of data on one side of the disc, an increase of more than 7 times compared to CD-R and CD-RW . And this
is on one side. The future means of DVD-ROM will be able to store data on both sides of the disc, and using double layer media to allow the units to read up to four levels of data stored on both sides of the disc giving as result storage capacity of 17 GB. DVD-ROM drives are capable of Disc formats read CD-R and CD-RW. Among the applications that leverage the large storage capacity of DVD-ROM have the full length movies and game you offering DVD-based videos MPEG -2 high resolution immersive sound Dolby AC-3, and powerful 3D graphics. [3] (See Appendix 6)
Hard: These are currently the main storage subsystem in the computer systems. It is a device responsible for storing persistent information on a computer, is considered the system storage 's largest computer and it saves the files programs.
diskette or floppy
also a floppy disk or diskette (in English floppy disk), is a type
of data storage device comprising a circular piece of a magnetic material that allows recording and reading data, thin and flexible (hence its name), contained in a thin shell square or rectangular plastic. The disks are usually used for 3 ½ to 5 ¼ inches, used in computers or computer s personal, although currently the 5 ¼-inch disks are obsolete. Optical Device
The CD-R:
is a CD of 650 MB of capacity that can be read many times as desired, but whose content can not be modified once it has been recorded. Since you can not be erased or rewritten, they are suitable for storing files or other joint information unchanged.
CD-RW has the capacity of CD-R with the difference that these discs are rewritable giving them an advantage. CD-RW drives can record data on CD-R and CD-RW discs and can also read CD-ROM and CDs audio. The interfaces supported are EIDE, SCSI and USB .
DVD-ROM:
is a compact disc with a capacity of storing 4.7 GB of data on one side of the disc, an increase of more than 7 times compared to CD-R and CD-RW . And this
is on one side. The future means of DVD-ROM will be able to store data on both sides of the disc, and using double layer media to allow the units to read up to four levels of data stored on both sides of the disc giving as result storage capacity of 17 GB. DVD-ROM drives are capable of Disc formats read CD-R and CD-RW. Among the applications that leverage the large storage capacity of DVD-ROM have the full length movies and game you offering DVD-based videos MPEG -2 high resolution immersive sound Dolby AC-3, and powerful 3D graphics. [3] (See Appendix 6) DVD-RAM:
this medium has a capacity of 2.6 GB on a disk and cha ra 5.2 GB in a di Sco 
double-sided DVD-RAM can read any CD-R or CD-RW but can not write about them. DVD-RAM discs are rewritable, but can not be read by DVD-ROM drives.
· PC - Cards:
The PCMCIA standard that defines the PC Cards.
double-sided DVD-RAM can read any CD-R or CD-RW but can not write about them. DVD-RAM discs are rewritable, but can not be read by DVD-ROM drives. · PC - Cards:
The PCMCIA standard that defines the PC Cards.
PC Cards can be stored or cards I / O. These are compact, reliable, and lightweight making them ideal for notebooks, palmtops, and handheld PDAs. Due to its small size, are used for data storage, applications, memory cards, electronic cameras and cell phones. The PC Cards are the size of a card credit , but its thickness varies. The PCMCIA standard defines three different PC Cards: Type I 3.3 millimeters (mm) thick, Type II are 5.0 mm thick and Type III are 10.5 mm thick. Among the product newer using PC Cards have the Clik! PC Card Drive from Iomega is a Type II PC Card drive that can read and write disk Clik! 40 MB of capacity, this unit is designed to work with laptops with minimal consumption battery, the size of the disks is 2x2 inches.
. Flash Cards: Memory cards are nonvolatile data is preserved even when not powered by an electrical source, and data can be read, modified or deleted on these cards. With the rapid growth of digital devices such as PDAs, digital cameras, cell phones and digital devices music, the flash cards have been adopted as the storage of these devices causing them to lower their price and increase capacity storage very quickly. Toshiba recently release the market its new flash cards 64 MB SmartMedia and super-thin 512M-bit chip. The SmartMedia is able to store 72 digital images with a resolution of 1800x1200 pixels and more than 1 hour of music with quality CD. Among the products market using this technology have the digital audio player for Diamond Rio, Creative Labs Nomad, PDAs from Compaq, IBM Microdrive 340 MB of storage and more.
Removable Media
· Pen Drive or Flash Memory: A small device 
storage using flash memory to store information without batteries. The Pen Drive are resistant to scratches and dust that have plagued previous forms of portable storage, such as CDs and floppy disks. Newer operating systems can read and write on it without special drivers. In older computers (such as those equipped with Windows 98) you need to install a device driver.
· Zip Drives:
The Iomega Zip drive is a removable dis co.
is available in three main versions, the interface is SCSI, IDE, and one that connects to a parallel port . This document describes how to use ZIP Linux. Should be read in conjunction with the SCSI HOWTO unless you have the IDE version.
The Iomega Zip drive is a removable dis co.
is available in three main versions, the interface is SCSI, IDE, and one that connects to a parallel port . This document describes how to use ZIP Linux. Should be read in conjunction with the SCSI HOWTO unless you have the IDE version. Super Talent Launches 8GB USB drive world's smallest
Posted on 08/04/2008 at 5:43 am by ZeroZen The company Super Talent announced its new range of portable USB drives which have been made using technology chip-on-board (COB), which enables high storage capacity in a very reducido.Disponibles size in three models of different sizes, the PICO-A, PICO-PICO-B and C are resistant to shock, has a transfer rate of 30MB / s (200X), capacity 8GB storage and in the case of models A and C, are also waterproof (submersible). The photo is the model C, 8GB USB drive world's smallest with 31.3 x 12.4 x 3.4mm and weighing less than 5 grams. All units cost less than $ 35 and are guaranteed for life. New
Memory Stick
With the need for storage that currently prevails, where most people want to carry your music files, your videos, photos, games and more, have a card flash memory having sufficient capacity for these tasks is of great ayuda.Y behold as New Memory Stick Micro (M2) Sandisk 4 gigabytes of entering the fray. With the ability to store up to a thousand songs in MP3 format, 9,600 high-resolution pictures or up to 20 hours of MPEG4 video 2, this card comes to the aid of mobile users. The M2 format was developed jointly by Sony and Sandisk, which is why the card is compatible only with Sony's mobile devices, such as Cyber-shot digital cameras and Walkman music players and mobile phones from Sony Ericsson.Las M2 card dimensions are 15 mm by 12.5 mm by 1.2 mm, according to the company is one of the means of more flash memory storage small that there is now on the market, behind microSD.Sin format, however, the user should be aware that is only compatible with devices that have an M2 slot as well as those with Memory Stick PRO slot quick and external Duo.Unidades eSATALa cheap interface with Apricorn EZ Bus Desktop SATA is fast and economical. With increasing capacities and high-speed interfaces, modern external drives for the desktop has become an increasingly attractive alternative compared to internal storage. But which of them offers the best performance for your money? Here we tested seven of these units with the fastest interface, eSATA, in five of the cases. But in two of them was FireWire 800, which is fairly common in the Mac, but to connect one of these units many PC users have to install a PCI FireWire 800 (U.S. $ 60). As expected, our tests showed that such external SATA drives were faster than FireWire 800 models, with one exception, the Western Digital MyBook Pro Edition, which performed almost as well as eSATA equivalent, the MyBook Premium ES Edition ( U.S. $ 230), whose price is slightly lower and finished fifth. All tested units offer the convenience of a USB port 2.0.El EZ Bus Desktop SATA Apricorn won our Best Buy distinction and the highest grade in performance. This 500GB drive is fast and cheap, does not have a touch of style and FireWire interface of costlier models, but basic tools for backup, encryption and synchronization Files.entry the past, high prices of the elegant LaCie drives have affected their ratings in the tables. The new d2 Quadra worth $ 50 to $ 70 more than other 500GB drives, but it comes with eSATA, FireWire 800, FireWire 400 and USB 2.0, and played solidly. For PC users who plan to upgrade to eSATA or who do not have a Mac, the flexibility of multiple interfaces might be worth the cost adicional.La Iomega Black Series 500GB eSATA figured third overall, but performance testing was second, very close to the Apricorn. It looks more elegant and cost $ 20 more than Best Buy, but also comes with backup software EMC Retrospect Express and a PCI eSATA card if your system does not have a Seagate FreeAgent Pro SATA.La port, we evaluated above ( http://www.pcwla.com/07072500 ) finished fourth. This unit is attractive and has a good price for a 750GB model, also comes with a five-year warranty and a full software backup and create versiones.Dos products could not be on the table. The Western Digital MyBook Pro Edition 500GB was the fastest to perform a virus scan and a search of files, but also the slowest when our test PC wrote a series of files and folders in it, despite its FireWire interface 800.La Velocity2 Redundant CMS Products Backup System, 1.5TB, nor qualified, produces an average performance but includes backup software for desktop and server, plus options
With the need for storage that currently prevails, where most people want to carry your music files, your videos, photos, games and more, have a card flash memory having sufficient capacity for these tasks is of great ayuda.Y behold as New Memory Stick Micro (M2) Sandisk 4 gigabytes of entering the fray. With the ability to store up to a thousand songs in MP3 format, 9,600 high-resolution pictures or up to 20 hours of MPEG4 video 2, this card comes to the aid of mobile users. The M2 format was developed jointly by Sony and Sandisk, which is why the card is compatible only with Sony's mobile devices, such as Cyber-shot digital cameras and Walkman music players and mobile phones from Sony Ericsson.Las M2 card dimensions are 15 mm by 12.5 mm by 1.2 mm, according to the company is one of the means of more flash memory storage small that there is now on the market, behind microSD.Sin format, however, the user should be aware that is only compatible with devices that have an M2 slot as well as those with Memory Stick PRO slot quick and external Duo.Unidades eSATALa cheap interface with Apricorn EZ Bus Desktop SATA is fast and economical. With increasing capacities and high-speed interfaces, modern external drives for the desktop has become an increasingly attractive alternative compared to internal storage. But which of them offers the best performance for your money? Here we tested seven of these units with the fastest interface, eSATA, in five of the cases. But in two of them was FireWire 800, which is fairly common in the Mac, but to connect one of these units many PC users have to install a PCI FireWire 800 (U.S. $ 60). As expected, our tests showed that such external SATA drives were faster than FireWire 800 models, with one exception, the Western Digital MyBook Pro Edition, which performed almost as well as eSATA equivalent, the MyBook Premium ES Edition ( U.S. $ 230), whose price is slightly lower and finished fifth. All tested units offer the convenience of a USB port 2.0.El EZ Bus Desktop SATA Apricorn won our Best Buy distinction and the highest grade in performance. This 500GB drive is fast and cheap, does not have a touch of style and FireWire interface of costlier models, but basic tools for backup, encryption and synchronization Files.entry the past, high prices of the elegant LaCie drives have affected their ratings in the tables. The new d2 Quadra worth $ 50 to $ 70 more than other 500GB drives, but it comes with eSATA, FireWire 800, FireWire 400 and USB 2.0, and played solidly. For PC users who plan to upgrade to eSATA or who do not have a Mac, the flexibility of multiple interfaces might be worth the cost adicional.La Iomega Black Series 500GB eSATA figured third overall, but performance testing was second, very close to the Apricorn. It looks more elegant and cost $ 20 more than Best Buy, but also comes with backup software EMC Retrospect Express and a PCI eSATA card if your system does not have a Seagate FreeAgent Pro SATA.La port, we evaluated above ( http://www.pcwla.com/07072500 ) finished fourth. This unit is attractive and has a good price for a 750GB model, also comes with a five-year warranty and a full software backup and create versiones.Dos products could not be on the table. The Western Digital MyBook Pro Edition 500GB was the fastest to perform a virus scan and a search of files, but also the slowest when our test PC wrote a series of files and folders in it, despite its FireWire interface 800.La Velocity2 Redundant CMS Products Backup System, 1.5TB, nor qualified, produces an average performance but includes backup software for desktop and server, plus options
RAIDALMACENAMIENTO
NETWORK CONNECTED
NETWORK CONNECTED
The attached storage (NAS) to homes and small businesses is getting cheaper and easier to use. We tested four new units, three of which achieved a position in our table. All are easy to install, all come with USB 2.0 ports for backup on an external hard drive and all accept some kind of RAID configuration with multiple discos.Nuestra new Best Buy, the NV + NetgearReadyNAS very fast, is a version of our winning above but with a new brand, the ReadyNAS NV from Infrant Technologies (May 2007, Netgear announced the acquisition of Infrant Technologies). The shiny silver cover Netgear team holds four disk drives that can be exchanged "hot", for a total capacity of 1 terabyte (1,000 GB) and configurable as RAID 0, 1 or 5, or as the exclusive X-RAID Netgear, which lets you add disk drives and RAID rebuild on the fly. The variables, which are handled via the browser, are highly configurable and well explained. You also get a lot of benefits for your money, but this expensive NAS device offers more storage than you need most users in the hogar.La Myshare Hammer 500GB, our second classified, is a better choice for home . It does not have DLNA media server, but Hammer says a forthcoming firmware update will correct this deficiency. This inexpensive unit consisting of two discs produced a better than average performance and has a sleek design that includes two USB ports, one of which allows the Myshare to automatically back up files on an external USB drive. On the other hand, was the only unit that came without the software to back seguridad.La 1TB TeraStation Live Buffalo Technology has a well-designed interface to modify its variables, the best on-screen and a lock to secure your housing containing four removable drives. He worked slowly compared with the other units we tested, perhaps because it came with a RAID 5 default settings, ensuring data redundancy across drives. Was only new devices that do not offer server capability impresión.La HP Media Vault Pro mv2040 was one point behind the TeraStation Live in our PCW Ratings, and therefore did not find a space on our table. You can only change one of its two 500GB drives and RAID has fewer options than others. His performance did not reach the average of the other units. HP sells this unit in your online store for SMEs. -Narasu Rebbapragada.Photoshop CS4 handles graphics files enormesEl new Adobe Photoshop CS4 includes new features and an updated interface, which alone makes it an upgrade to existing users the largest news apreciarán.Pero is that Photoshop comes in both 32 and 64 bit Windows Vista. The 64-bit edition will allow PCs that have a large amount of RAM to work on large images with less (ideally none) exchanges the hard disk, thus accelerating operaciones.Para beta test editions of both versions of Photoshop CS4, installed on a workstation with two Intel Xeon CPU, Windows Vista 64-bit and 8GB of RAM. Instead of acquiring the RAM on the fly, Photoshop requires that you assign a number específica.En 64-bit version, created and retouched an image of 45,000 by 45,000 pixels, for a total of 2,000 megapixels with a file size 5.6 GB. Most people do not need that level of precision, but some professional photographers do. Using 64-bit version will generate very little performance gains than the largest capacity RAM. And even a system configured with a large amount of RAM can not always avoid the lengthy process of reading and writing data to disk. When I asked Photoshop to apply a simple monochrome gradient to my 5.6 GB file, I had to stare at a dialog box for a long time waiting for finalizara.A halfway between laser mouse and a Flash memory The MS71 is a device that Asus presented at Cebit 2008, but still no price or date debut at mercado.Seguramente designed for the traveler who wants to walk lightweight luggage, MJ71 seems to be very big as a portable disk and uncomfortable if used as a mouse (not to mention the fact that looks like a lipstick). Both devices are separated to be used independently and then join magnéticanente.
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