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Storage is the way we retrieve data on computers or store data for future use
solid state is a non-volatile computer storage that stores and retrieves information using only electronic circuits, without any involvement of moving parts.
Optical Data is recorded by creating marks in unique patterns which can be interpreted back as data with the use of light.
Magnetic storage uses different patterns of magnetisation in a magnetizable material to store data.Magnetic storage uses a mechanical device which is connected to the computer.
Solid state drives, Optical drives and Magnetic drives have different ways of working.
Solid state drives
it uses semiconductor chips, not magnetic media, to store data. A hard disk drive uses a mechanical arm with a read and write head to move around and read information from the right location on a storage platter. This difference makes SSDs much faster.
Examples:
-USB memory sticks
-Mobile phones
-Digital audio players.
Optical storage
Optical Data is recorded by creating marks in unique patterns which can be interpreted back as data with the use of light.
Examples:
-Bluray DVD
-DVD ROM
-CD ROM
Magnetic
The hard disk or the floppy disk spins around 10,000 revolutions per minute and the the data is stored on tracks which are divided into sectors.
Examples:
-Fixed Hard Drive
-Portable Hard Drive
-Hard drives
Memory is any physical device capable of storing information temporarily. There are two types, short term and long term.
Each computer has RAM, it loads operating systems like Microsoft word for example. Ram can only load a certain amount of programs until it requires virtual memory in the hard drive to help. Additionally, RAM is volatile so if you accidentally turn of your computer everything stored in RAM, such as homework will be lost if its not saved
Different storage devices can have better features than others in term of:
-Capacity
-Durability
-Transportation
-Reliability
Advantages:
-Very portable and small
-Less threat from online attacks
-Cheap and effective
-Long lasting
Disadvantages:
-Easy to loose
-Requires expensive equipment to use
-Difficult to recover lost files
Advantages:
-Small and portable
-Cheap to get
-Pretty fast to access
-Works with most computers
Disadvantages:
-Very fragile, can break easily
-Not a lot of storage compared to hard drives
-Slower than hard drives to access
Advantages:
-Not expensive
-Very easy and fast to access data
-Can access on any part of the drive
-large storage space
-Can be portable
Disadvantages:
-Data can be messed with by magnetic fields and dust
-Gradually lose their charge
-Hard disks are not very reliable as they stop working
-Can crash unexpectedly
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The device that actually holds the data is known as the storage medium.
The device that saves data onto the storage medium, or reads data from it, is known as the storage device.
Memory can be Short term, Long term or permanent. Storage media is storage that stores applications and user information. The primary storage media for a computer is usually the internal hard drive which is normally around 1 TB, However these can be external as well! For example:
-Flash drives
-External Hard drives
A secondary storage device refers to any non-volatile storage device that is internal or external to the computer. Its a storage devices that serves as an addition to the computer's primary storage like RAM. These devices store virtually all programs and applications like operating systems
Primary storage, also known as main storage, is meant to be easily assessed by the CPU. The best example is RAM, used for the operating systems and to load applications as the CPU can access any part of RAM at the same speed much greater than it can access on any other storage devices.