Published on 9/6/2011

Compact floppy

Compact cassette was invented by Philips, you guessed that two small reels of magnetic tape in plastic case. It is in this format in the 1960 's made audio recordings. HP has used such tapes in his HP 9830 desktop (1972), but on top of such magazines as the most popular digital information carriers do not enjoy. Then searchers of cheap media still turned his gaze toward the cassettes, which with their light hand remained popular until the beginning of the 1980 's. the data on them, by the way, you can download from usual audio player.

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Published on 9/6/2011

ROM-cartridge

ROM cartridge is a Board consisting of permanent memory (ROM) and connector placed in solid shell. Application cartridge-computer games and programs. So, in 1976 the company Fairchild released a ROM cartridge for writing software for the set-top box Fairchild Channel f. Soon to use ROM cartridges were adapted and home computers like the Atari 800 (1979) or TI-99/4 (1979). ROM cartridges were easy to use, but on the road, which is actually "died". < br/> < br/> Cartridge is an electronic device based on the ROM chip, designed to store replacement program in gaming consoles, gaming machines, and a number of home computers. The name comes from the English word cartridge (cartridge), in the Russian language also applies the name "cassette". In the English language are also used the acronym "cart" and the name of the game "pack" (and also "Game Pak", the brand used by Nintendo).

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Published on 9/6/2011

CD

The CD was developed in 1979, Philips and Sony. At Philips have developed a general manufacturing process, based on its earlier laser disc technology. Sony, in turn, has used its own method of signal encoding PCM-Pulse Code Modulation, used previously in digital Professional machines. In 1982, started mass production of CDs, in Langenhagen, Hannover, Germany. The first commercial release was announced June 20, 1982 music CD of the year. History States that it was recorded the album "The Visitors" by ABBA.[1]. the first compact disk, hit the shelves of music stores was the 1978 Billy Joel album, called 52nd Street. The sale of this album on CD in Japan, October 1, 1982.

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Published on 9/6/2011

CD under the microscope

CDs have a diameter of 12 cm, initially to house up to 650 MB of data (or 74 minutes of audio). According to one legend, the developers expect volume to completely fit on the disc of Beethoven's Ninth Symphony (the most popular piece of music in Japan in 1979, according to a survey conducted by specially), which (in the longest known performances) is 74 minutes. However, since about 2000, the increasing spread receive up to 700 Mb disks that allow you to burn 80 minute audio, then completely vytesnivšie drive 650 MB. There are also carriers of up to 800 MB (90 minutes) and even more, but they can not be read on some CD drives. There are also singles, 8 in diameter.9 cm [21 384 days] (not to be confused with mini discs 8 cm in diameter), which contains about 140 or 210 MB of data or 21 minutes of audio, and CD form resembling credit cards (i.e. CD-business cards).

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Published on 9/6/2011

Magneto-optical disk

As compact discs, magneto-optical disks "reads" the laser. However, in contrast to the conventional CD and CD-R most of the magneto-optical media allow you to repeatedly strike and erase data. This is achieved through the interaction of the magnetic and laser process when writing data. First magneto-optical disc computer kit was NeXT (1988 year Photo bottom right), and the capacity it was 256 MB. The most famous of this type of media is a CD with Sony MiniDisc (above Centre, 1992 year). Had he and "fellow" for the storage of digital data, which was called MD-DATA (top left). Magneto-optical drives are still, however, due to the low capacity and relatively high cost they have moved into the category of niche products. < br/> < br/> < br/> magneto-optical drive is manufactured using ferromagnetic materials. First magneto-optical drives were the size of 5.25 "floppy drives appeared, then 3.5." < br/> < br/> recording on magneto-optical drive is carried out on the following technology: laser radiation heats the plot track above the Curie point temperature, and electromagnetic pulse changes the magnetization, creating prints that are equivalent to the optical disk pitam. < br/> < br/> Read is the same laser, but at a lower power, insufficient to heat the disc: polarized laser beam passes through the disc material, is reflected from the substrate, passes through the optical system and hits the sensor. Depending on the magnetization changes the plane of polarization of a beam of the laser (the Kerr effect) that is determined by the sensor.

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Published on 9/6/2011

Iomega Zip

Iomega Zip is a family of floppy-disk drives, floppy disks, analogues of great capacity. Invented by Iomega [1] at the end of 1994. Originally had a capacity of about 100 megabytes, in later versions, it was increased to 250 and 750 megabytes < br/> < br/> Format became more popular than the family of super-floppy, but never received the same status as conventional 3.5-inch floppy disks. He was purged in USB flash drives and CD-rewritable (CD) and DVD, and is not currently used. The Zip brand was also used for the internal and external recordable CD called Zip-650 and Zip-CD.

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Published on 9/6/2011

Floppy

The first superdisketu released Company Insight Peripherals in 1992 year. The 3.5-inch disk fits 21 MB of information. Unlike other media, the format was compatible with earlier traditional drives for 3.5-inch floppies. The secret of the high efficiency of these drives has been lying, combined optical and floppy disk, that is, the data recorded in the magnetic environment using laser head, thus providing more accurate recording more tracks and, consequently, more space. In the late 1990 's there were two new format-Imation LS-120 SuperDisk drive (120 Mb, bottom right) and the Sony HiFD (150 Mb, above right). Novelties have become serious competitors of the Iomega Zip drive, but ultimately all defeated the CD-R format.

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Published on 9/6/2011

Flash

In the early 1980 's Toshiba invented Flash memory NAND, but technology has become popular only a decade later, after the advent of digital cameras and PDAS. During this time, she begins to be implemented in different forms-from large credit card (for use in early naladonnikah) to CompactFlash cards, SmartMedia, Secure Digital, Memory Stick and xD Picture Card Flash storage cards are convenient, first of all, the fact that there are no moving parts. In addition, they are economical, durable and relatively inexpensive in the constantly growing amount of memory. The first CF cards contain 2 Mb, and now their capacity reaches 128 Gb. < br/> < br/> in 1998 year era of USB. An undeniable convenience of USB devices have made them an integral part of life in almost all PC users. Over the years, they are reduced in physical size, but are becoming larger and cheaper. Especially popular were introduced in 2000, the "stick", or USB thumb drives (from the thumb-thumb "), named so for its size-from a human finger. Thanks to the large capacity and small size USB drives have become, perhaps, the best carrier of information, invented by humankind.

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