What Is Computer Storage Called
What is COMPUTER MEMORY? What does COMPUTER MEMORY mean? COMPUTER MEMORY definition & explanation
The Audiopedia:
✪✪✪✪✪ ✪✪✪✪✪ What is COMPUTER MEMORY? What does COMPUTER MEMORY mean? COMPUTER MEMORY COMPUTER MEMORY definition COMPUTER MEMORY explanation. Source: article, adapted under license. In computing, memory refers to the computer hardware devices used to store information for immediate use in a computer; it is synonymous with the term "primary storage". Computer memory operates at a high speed, for example randomaccess memory (RAM), as a distinction from storage that provides slowtoaccess program and data storage but offers higher capacities. If needed, contents of the computer memory can be transferred to secondary storage, through a memory management technique called "virtual memory". An archaic synonym for memory is store. The term "memory", meaning "primary storage" or "main memory", is often associated with addressable semiconductor memory, integrated circuits consisting of siliconbased transistors, used for example as primary storage but also other purposes in computers and other digital electronic devices. There are two main kinds of semiconductor memory, volatile and nonvolatile. Examples of nonvolatile memory are flash memory (used as secondary memory) and ROM, PROM, EPROM and EEPROM memory (used for storing firmware such as BIOS). Examples of volatile memory are primary storage, which is typically dynamic randomaccess memory (DRAM), and fast CPU cache memory, which is typically static randomaccess memory (SRAM) that is fast but energyconsuming, offering lower memory areal density than DRAM. Most semiconductor memory is organized into memory cells or bistable flipflops, each storing one bit (0 or 1). Flash memory organization includes both one bit per memory cell and multiple bits per cell (called MLC, Multiple Level Cell). The memory cells are grouped into words of fixed word length, for example 1, 2, 4, 8, 16, 32, 64 or 128 bit. Each word can be accessed by a binary address of N bit, making it possible to store 2 raised by N words in the memory. This implies that processor registers normally are not considered as memory, since they only store one word and do not include an addressing mechanism. Typical secondary storage devices are hard disk drives and solidstate drives..Read More »
What is RAM DRIVE? What does RAM DRIVE mean? RAM DRIVE meaning, definition & explanation
The Audiopedia:
✪✪✪✪✪ ✪✪✪✪✪ What is RAM DRIVE? What does RAM DRIVE mean? RAM DRIVE meaning RAM DRIVE definition RAM DRIVE explanation. Source: article, adapted under license. SUBSCRIBE to our Google Earth flights channel A RAM drive (also called a RAM disk) is a block of randomaccess memory (primary storage or volatile memory) that a computer's software is treating as if the memory were a disk drive (secondary storage). It is sometimes referred to as a virtual RAM drive or software RAM drive to distinguish it from a hardware RAM drive that uses separate hardware containing RAM, which is a type of batterybacked solidstate drive. The performance of a RAM drive is in general orders of magnitude faster than other forms of storage media, such as an SSD, hard drive, tape drive, or optical drive. This performance gain is due to multiple factors, including access time, maximum throughput, and type of file system. File access time is greatly reduced since a RAM drive is solid state (no mechanical parts). A physical hard drive or optical media, such as CDROM, DVD, and Bluray must move a head or optical eye into position and tape drives must wind or rewind to a particular position on the media before reading or writing can occur. RAM drives can access data with only the memory address of a given file, with no movement, alignment or positioning necessary. Second, the maximum throughput of a RAM drive is limited by the speed of the RAM, the data bus, and the CPU of the computer. Other forms of storage media are further limited by the speed of the storage bus, such as IDE (PATA), SATA, USB or Firewire. Compounding this limitation is the speed of the actual mechanics of the drive motors, heads, or eyes. Third, the file system in use, such as NTFS, HFS, UFS, ext2, etc., uses extra accesses, reads and writes to the drive, which although small, can add up quickly, especially in the event of many small files vs. few larger files (temporary internet folders, web caches, etc.). Because the storage is in RAM, it is volatile memory, which means it will be lost in the event of power loss, whether intentional (computer reboot or shutdown) or accidental (power failure or system crash). This is, in general, a weakness (the data must periodically be backed up to a persistentstorage medium to avoid loss), but is sometimes desirable: for example, when working with a decrypted copy of an encrypted file. In many cases, the data stored on the RAM drive is created from data permanently stored elsewhere, for faster access, and is recreated on the RAM drive when the system reboots. Apart from the risk of data loss, the major limitation of RAM drives is their limited capacity, which is constrained by the amount of RAM within the machine. Multiterabytecapacity persistent storage has become commoditized as of 2012, whereas RAM is still measured in gigabytes. RAM drives use the normal RAM in main memory as if it were a partition on a hard drive rather than actually accessing the data bus normally used for secondary storage. Though RAM drives can often be supported directly from the operating system via special mechanisms in the operating system kernel, it is possible to also create and manage a RAM drive by an application. Usually no battery backup is needed due to the temporary nature of the information stored in the RAM drive, but an uninterrupted power supply can keep the entire system running during a power outage, if necessary. Some RAM drives use a compressed file system such as cramfs to allow compressed data to be accessed on the fly, without decompressing it first. This is convenient because RAM drives are often small due to the higher price per byte than conventional hard drive storage..Read More »
Here’s How We Could Store Data on a Single Atom
Seeker:
Data storage is getting smaller and smaller, but what’s the limit? We Could Back Up the Entire Internet on a Gram of DNA Read More: Scientists Have Found a New Way of Storing Information in a Single Atom “Humanity is producing so much data every single minute that we either need to slow down, or scientists need to crack the problem of finding better ways of storing that data ASAP. Now, new research has taken us one step closer to the ultimate in compact data storage: putting data on a single atom.” A step closer to singleatom data storage “Despite the rise of solidstate drives, magnetic storage devices such as conventional hard drives and magnetic tapes are still very common. But as our datastorage needs are increasing at a rate of almost 15 million gigabytes per day, scientists are turning to alternative storage devices.” A singleatom magnet breaks new ground for future data storage “Magnetic storage devices such as computer hard drives or memory cards are widespread today. But as computer technology grows smaller, there is a need to also miniaturize data storage. This is epitomized by an effort to build magnets the size of a single atom.” ____________________ Elements is more than just a science show. It’s your scienceloving best friend, tasked with keeping you updated and interested on all the compelling, innovative and groundbreaking science happening all around us. Join our passionate hosts as they help break down and present fascinating science, from quarks to quantum theory and beyond. Seeker explains every aspect of our world through a lens of science, inspiring a new generation of curious minds who want to know how today’s discoveries in science, math, engineering and technology are impacting our lives, and shaping our future. Our stories parse meaning from the noise in a world of rapidly changing information. Visit the Seeker website Elements on Facebook Subscribe now! Seeker on Twitter Seeker on Facebook Seeker.Read More »
WHAT IS CLOUD STORAGE? WHY THIS TYPE OF STORAGE IS CALLED "CLOUD"?
Spoiled Squad:
A short Video describing Basic Cloud Storage and the reason behind why it is actually called "The Cloud Storage". _________,________________________________________________________ Do Subscribe to My Channel Spoiled Squad I bring different, weird, interesting, informative, fun videos every my All other videos also available on my channel,Share it, Like it and give your valuable comments on it. ________________________________________________________________ Music credit:.Read More »
When Megabytes Were Big. Floppy Disks
ChipDipvideo:
When Megabytes Were Big. Floppy DisksOn the 24th of April, 2010 Sony Corporation officially announced that it will stop producing floppies in March 2011. This announcement drew the curtain in the evolution of floppies, or as they are officially called, floppy disk drives. Nowadays floppies with their megabytes seem to us like prehistorical dinosaurs as there is a broadband Internet, PCs with gigahertz processors, gigabyte RAM and terabyte hard drives. In some years a new generation will not be able to answer why hard drive on their computer is designated as disk C. It all started more than 40 years ago. A group of IBM engineers guided by Alan Shugart developed an 8inch floppy disk drive for storing and transferring computer microprogrammes. In 1971 after many improvements IBM introduced it into the market. At that time numerous disk size standards had been already developed. But eventually 8inch floppies won and were accepted as a common standard. The disks were made of thin plastic and were covered with ferric oxide. They were put into plastic or hard paper packets, cases. The whole design was quite loose or floppy. That is how the disk got its name. Initially storage capacity of floppies did not exceed 100 kilobytes while latest versions had storage from 400 kilobytes to megabytes. If compared, an 8inch floppy could substitute about 12 000 punchcards or about 300 meters of punched tape while rewriting was also possible. In those times that was a revolution. In 1976 8inch floppies were replaced by versions. The advantages of a new technology were evident. The case became more compact. There was a special material inside which protected the disk against excessive wear. In the last development stages a 5inch floppy had megabyte storage. For example this floppy made by 3M is a doubleside high density disk with exactly megabytes capacity. The disk has a special notch. If it's not glued with a special sticker or any other material then the disk is protected against data being deleted or overwritten. Finally in 1981 Sony introduced a floppy. It also went through an aggressive battle of standards as other companies suggested using 2 or or 4inch disks. Only in 1984 a disk became a generally recognized standard. The case of the floppy became even harder. Unlike 5inch floppies it was protected with a special spring shutter. A special protector was used to prevent deletion or overwriting of data. A maximum storage capacity of a standard floppy is megabytes. Using a special utility programme it was possible to increase storage up to megabytes and more. To transfer big volumes of data such as programmes or more often games, archivers like ARJ, were used. They could create multivolume archives of any volume size. For example, megabytes, just for a floppy. So by the end of 80sbeginning of 90s a standard set of PC disk drives was formed. That was disk drive A and B for 5 and 3inch floppies and disk C for a hard drive. Later CDROM was added. Besides temporary data storage and its transfer between computers floppies were also used as system disks. In case of a system failure you could load into a simple operating system from them. Modern computers and especially laptops do not have these drives. The floppy era has ended. However, as strange as it may seem, floppies are still used in quite advanced industries. That is in aviation to update navigational databases, as well as in metalworking and plastic moulding machinery to load programmes. Floppies are also very popular among various government agencies, especially among tax inspection offices..Read More »
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