Storage Technology Electronic devices that store retrieve and save instructions and data Todays microcomputers or PCs include several types of storage devices Capacity and speed ID: 514637
Download Presentation The PPT/PDF document "Storage" is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.
Slide1
StorageSlide2
Storage Technology
Electronic devices that store, retrieve, and save instructions and data.
Today’s microcomputers or PCs include several types of
storage devices.Capacity and speed are important considerations when selecting a new storage device for a PC.Slide3
Storage
Technology
Magnetic storage devices
store data by magnetizing particles on a disk or tape. They have a limited life-span of 1 to 5 years, depending on the device.Magnetic storage is non-volatileEx: Hard driveOptical storage devices store data as light and dark spots on the disk surface. stores information in deformities on the surface of a circular disc and reads this information by illuminating the surface with a laser diode and observing the reflection
Optical disc storage is
non-volatile
Ex: CD CDROM. DVDSlide4
Storage Technology
Semiconductor :-
uses semiconductor-based integrated circuits to store information. A semiconductor memory chip may contain millions of tiny transistors or capacitors. Both volatile and
non-volatile forms of semiconductor memory existRAM For volatilenon-volatile semiconductor memory known as flash memory Slide5
Storage Devices
Computer storage devices
: The storage devices are one of the most important components of the computer system,
these devices that are used in the computers to store the data. computer has many types of data storage devices. Some of them can be classified as the removable(flash Memory, external hard, Floppy Disk) data Storage Devices and the others as the non-removable (RAM, Internal Hard)data Storage Devices.The data Storage Devices also come in many sizes and shapes.Slide6
Cont.
Device storage either volatile memory or non-volatile memory,
volatile memory is the kind of the memory that is erasable and the non volatile memory is the one where in the contents cannot be
erased.Example :Primary memory such as RAM , Cache (Volatile)Secondary Memory such as Hard Disk, Flash memory (Non-volatile)Therefore non volatile much:-Cheaper Slower Slide7
Storage Technology
Electronic devices that store, retrieve, and save instructions and data.
Today’s microcomputers or PCs include several types of
storage devices.Capacity and speed are important considerations
when selecting a new storage device for a PC.Slide8
Storage
Technology
Magnetic storage devices
store data by magnetizing particles on a disk or tape. They have a limited life-span of 1 to 5 years, depending on the device.Magnetic storage is non-volatileEx: Hard driveOptical storage devices store data as light and dark spots on the disk surface. stores information in deformities on the surface of a circular disc and reads this information by illuminating the surface with a laser diode and observing the reflection
Optical disc storage is
non-volatile
Ex: CD CDROM. DVDSlide9
Storage Technology
Semiconductor :-
uses semiconductor-based integrated circuits to store information. A semiconductor memory chip may contain millions of tiny transistors or capacitors. Both volatile and
non-volatile forms of semiconductor memory existRAM For volatilenon-volatile semiconductor memory known as flash memory Slide10
Storage
Devices
Hard Disk Drives
Capacity is measured in gigabytes (GB or billions of bytes).Typically permanently installed.Used to store operating system, application software, utilities and data.Magnetic storage device.Slide11
11
Storage Devices
CD-ROM Drives
Typically installed on all new computer systems. (Were add-on device until the mid 1990’s).Capacity is 600 to 750 megabytes (MB or millions of bytes).Most mass-produced commercial software is packaged on a CD.Slide12
RAM
(
Random Access Memory)
“Waiting room” for computer’s CPU. Holds instructions for processing data, processed data, and raw data.Ram is measured by:Capacity (in Megabytes or Gigabytes)Speed (in Nanoseconds)Slide13Slide14
Magnetic tapeSlide15
SemiconductorSlide16
Optical disk