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Chapter 8 (Memory (ROM (Another rewritable type of ROM is EPROM or…

- - - - Used for devices that have to Upgrade their firmware in the future
        
        Rewriting and erasing data to ROM is called Flashing
- - - - The first storage device capable of storing up to1Gigabyte or 1000 Megabytes of data was made by IBM [International Business Machines], who were also responsible for many early storage devices
    - - Punch cards
      - Punched Tape
      - Magnetic Drum Rolls
  - - - also known as main storage or memory, is the area in a computer in which data is stored for quick access by the computer's processor
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        ROM is also primary memory
        
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    - - A flash drive is a small offline, ultra-portable storage device which, unlike an optical drive or a traditional hard drive, has no moving parts.Flash drives connect to computers and other devices via a built-in USB Type-A plug, making a flash drive a kind of combination USB device and cable.Flash drives are often referred to as pen drives, thumb drives, or jump drives. The terms USB drive and solid state drive (SSD) are also sometimes used but most of the time those refer to larger and not-so-mobile USB-based storage devices.
    - - Secondary
        
        Magnetic Storage is the manipulation of magnetic fields on a medium in order to record audio, video or other data.Magnetic storage has been around in many forms since 1888 by Oberlan Smith, who publicized his audio recording on a wire in Electrical World. In broad terms, magnetic storage mostly works very similarly to Smith's recording. Read and write heads (either combined or separate) are used to align the magnetic fields on the recording medium. A great variety of analog and digital devices using magnetic storage.Many types of magnetic storage involve a tape medium ether on a real or in a cassette that is moved by read and write heads. Similar working devices include real to real tapes, 8 track tapes and audio cassettes as well as video storage mediums of VHS, D-VHS and Betamax.In main computer storage mechanisms have generally involved a spinning disc or platter and read write heads on an armature (though there have also been tape drives and magnetic drums used in the past). Disk storage solutions include floppy drives (8, 2.5 and 5.25 inch alike), magneto-optical rewritable discs as well as hard drives including helium hard drives. These technologies have taken us from capacities of kilobytes to numerous terabytes and bytes per second to 100+ MB per second. Laser switched magnetic storage hard drives have promised to improve performance by 1000 times in the future.
        
        Optical storage is the storage of data on an optically readable medium. Data is recorded by making marks in a pattern that can be read back with the aid of light, usually a beam of laser light precisely focused on a spinning optical disc. this includes CD, BLU-RAY, DVD and the Blu-ray and DVDs can have multiple layers to accommodate more storage
        
        Solid-state storage (SSS) is an increasingly popular backup alternative to traditional storage technologies such as the hard disk drive (HDD), compact disc, rewriteable (CD-RW), and digital versatile disc RAM (DVD-RAM).All SSS devices, also called solid-state drives (SSDs), function entirely by electronic means, and therefore they lack internal moving parts. In theory, this characteristic should allow SSS devices to perform faster, longer, and more reliably than devices that employ mechanical components. In practice, the situation is more complex because optimum performance requires dovetailing of the underlying technologies.