The storage-access device

Storage device with random access (RAM) – a kind of computer memory that can achieve at the same time access to any cell by its address on read or write.

IBM 701

IBM 701

The very first computers to carry out the functions of the main memory, the capacity of which was hundreds or thousands of bits used for the delay line memory or relay various vacuum tubes. Built on triodes latch used for higher speed memory blocks (registers, register direct access storage).

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History of RAM

Memory (RAM) – a device that is a critical component in the computer and that it determines the speed of the last, and also the maximum amount of his tasks simultaneously.

FPM RAM 4MB manufacturer IBM

FPM RAM 4MB manufacturer IBM

The first memory was developed in 1970 by American scientist Robert Dennard, who worked at IBM. This kind of memory and gave the foundation that exists at the moment as a memory. It was a dynamic memory DRAM. But as with the introduction of the DRAM is not quite time to process the data so as one would like, then 10 years later appeared the form of dynamic memory – FPM.

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History MicroSD memory card

MicroSD memory card format currently are among the most commonly used formats of memory cards that are regularly used in portable devices, such as smartphones, MP3 players or mobile phones.

SanDisk MicroSD 512 MB

SanDisk MicroSD 512 MB

MicroSD format has become so common for two reasons:

  • because of its relatively inexpensive cost
  • due to its very small size (11x15x1 mm)
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History of the stick

Flash card is a type of semiconductor technology electrically reprogrammable memory. The device uses the USB-port of your computer to transfer and recording information.

The inventor of flash memory is considered Fuji Masuoka, employee Toshiba (1984). Thanks to which in 1988 was first released a commercial flash chip. So began the story of the stick. At the time, Intel, learning about flash memory, Toshiba asked for a few samples for the study. After samples were obtained Intel, the company allocated 300 people to develop such a device.

Modern flash drive Kingmax UD-03 32 GB

Modern flash drive Kingmax UD-03 32 GB

According to one version, the term “flash” was associated with the initial singularity types of flash drives that were used to store expensive special services and important information, because when an unauthorized access attempt this media itself autonomously and irrevocably delete all the necessary information.

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History of the CD

Everyone in my life used CDs, which happen to have a very interesting history of its creation.

In 1979 there was a real revolution in the music industry, he was associated with the appearance of a compact disc for storing digital audio. This event happened by combining two corporations Sony and Philips. In the same year jointly by the two companies released their first CD-player.

The first CD drive - ABBA «The Visitors»

The first CD drive – ABBA «The Visitors»

To develop and release a new audio CD format, were connected developers of both companies. Philips chief believed that the drive must have a diameter of 11.5 cm and a size such that it could be written about 1 hour of music.

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History of hard disk drives

September 4, 1959 the world was introduced by IBM 350 Disk Storage Unit – the first hard drive. It was an incredibly expensive machine, similar to the cabinet height 1.7 m, width 1.5 m, 0.74 m thick, which weighed about 1 ton. On its spindle has 50 disks (one disk size – 61 cm) coated with a special paint and containing a ferromagnetic material. Disk rotation speed was 1200 rpm, and the amount of stored information – 4.4 MB.

IBM 350 Disk Storage Unit

IBM 350 Disk Storage Unit

In 1979, one of the developers of IBM created his company Seagate Technology, and from that moment began the history of hard drives as a mass product. The company took the issue of hard drives, which first volume was 5 MB, 10 MB and then.

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