Storage Devices

English III
Theme: Storage Device
Integrant: Frank Fernandes
Juan Carlos Chirino
José A Escobar Toranzo
Fernando Hechavarría
José A Moreno Barrera
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Storage devices retain items such as data,instructions, and information for retrieval and
future use. They include floppy disks or
diskettes, hard disks, compact discs (both read-
only and disc-recordable), tapes, PC cards,
Smart Cards,microfilm, and microfiche.
Type and Funtion of storage
devices.
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A storage device is a hardware device
designed to store information. There are two
types of storage devices used in computers;a '
primary storage ' device and a ' secondary
storage ' device.
Type and Funtion of storage
devices.
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Primary Storage
Primary Storage, also referred to as computer
memory, is used by the CPU(Central
Processing Unit) of a computer to continuously
read and execute programming instructions.
Also it reads and writes data from/to the file
store in the Secondary Storage of the
computer.And this is accessible directly by the
CPU. Typical examples of Primary Storage
types are RAM, ROM, and memory adapters.
Type and Funtion of storage
devices.
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Secondary Storage
SecondaryStorage refers to non-volatile data
storage which is not directly accessible by the
CPU and only accessible via primary storage
devices using I/O (Input/Output) channels or
device drivers. Typicalexamples of Secondary
Storage are hard disks, floppy disks, optical
storage devices ( such as CD , DVD drives),
magnetic tape data storage devices, RAM
drives, and flash memory (such as USB
sticks/keys.)
Characteristics of storage
devices
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Volatile memory requires a constant power to
maintain the stored information. They are
required to be very fast and they also are the
fastestmemory technologies of today (not a
universal rule).
Non-volatile memory will retain the stored
information even if there is no supply of electric
power. It is suitable for long-term storage of...