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Data Storage Devices
Data storage devices are any piece of computer hardware used to record some sort of information. Questions about storage devices and the media on which they record information belong here.
1,624 Questions
What is the purpose of optical disk drive?
A device for reading discs on which data is stored. They use a light laser which detects bumps and dips on the surface of a disc. these bumps and dips make up binary code which is interpreted by a computer of some sort. Optical drives include CD / DVD / Blu-Ray Disc readers or writers, as well as the already obselete HD DVD players
Explain all parts of floppy drive?
efgsysu7nvkjhdekjauynw7whbdnjcnshjcudhhuh7 hbudybegwevb\hvhnuhbreh7hfuhf78ryhgrbufhgr7
nufhebnhvfbnw8hf077321675342318264162461624612444
6123461824127317428342637446347538754385389454378953
6442387mnmnvcn723477yijfhu hjskaljfduabrgufdjguvdfhgrghibdrbbgjfhrbfurhgurhfgurbfruv
nufvhmmcndefidfidfujkkkoasaosmkvifngubhrng
ndvijgfvbuhrfjbujfvudfchfhuhrfhreufhr7gv,,kmnjkncuedbvufybgfrhvbuf7hvbreuvbg
What are the similarities ROM and Hard-drives?
they are both storage devices. both have data that can be read and used during the operating of the computer.
What must happen before any data can be read or written on a hard disk?
the right place on the hard disk has to be found, then the read/write head must be placed there, then the sector (a small part of the hard disk) is read or written, if it's read, the data is moved into the memory, maybe by the DMA (Direct Memory Access) Controller. Is it's a write operation, the data must first be given to the Hard Disc Controller.
When will the internet run out of space?
The current specification for IP addresses: (255.255.255.255)
IPv4 uses 32-bit (four-byte) addresses, which limits the address space to 4294967296 (232) possible unique addresses
The new specification for IP addresses: (3ffe:1900:4545:3:200:f8ff:fe21:67cf)
IPv6 has a vastly larger address space than IPv4. This results from the use of a 128-bit address, whereas IPv4 uses only 32 bits. The new address space thus supports 2128 (about 3.4×1038) addresses.
So the internet will run out of space when our current specification limit is reached (pending switch to the new spec)
What is the Purposes of storage devices?
To back up data, transfer media, install applacations, store files with out storge devices your coumputer is useless
What is the need for safe storage and efficient retrieval of information?
Information retrieval is the activity of obtaining information resources relevant to an information need from a collection of information resources. Searches can be based on metadata or on full-text indexing.
Automated information retrieval systems are used to reduce what has been called "information overload". Many universities and public libraries use IR systems to provide access to books, journals and other documents. Web search engines are the most visible IR applications.
How do you burn movies on a DVD burner?
I use this video to DVD burner to burn my favorite movies and videos to DVD. It only takes me a few steps to burn DVD.
First, download the videos to your computer, download a DVD burner and run it.
Second, load files to DVD burner, insert DVD disc, make some operations like editting the effects, cropping and trimming...(optional)
Third, click burn button.
In the link you will read more details about how to burn DVD and free downloading a DVD burner.
Self-created DVd could be a surprising gift for your friends and families. Try it by yourself!
Most computer hard-drives are labelled C:
The recovery partition is usually labelled D:
The internal CD or DVD drive is usually labelled E: and
Removeable storage usually gets the label F:
At least - that's how the drives on my laptop are labelled !
How the speed of storage devices and memory is defined?
The speed of a storage drive/hard drive/hdd is measured in RPMs or Revolutions Per Minute. The faster the RPM, the faster the drive can can access data.
Most laptops have 5,400 RPM HDDs while some have 7,200 RPM HDDs.
Most dektop computers have 7,200 RPM ones while some top of the line models run at 10,000 RPM (such as the Seagate Velociraptor)
There are also Solid State Drives (SSDs) which are just beginning to become popular that contain no moving parts. These speeds are measured in Mb/s which rates how much data can be transferred per second. HDDs can also be measured in this way but RPM speed is more common. SSDs also have separate read and write speeds
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This is a very general question. There are many types of data storage devices, but the most common storage device that holds data instructions and information we think about today in the modern personal computer is the Hard Disk Device (HDD).
The HDD is an example of a magnetic storage media. Other example are tape drives, and floppy disks. Other types of storage are Optical (CD's and DVD's) and solid state devices like flash drives.
How many 700mb movies can you store on a 4gb flash drive?
700MB is the size of a CD. A DVD will hold 4.7GB. A full length movie will usually be between 3 and 4GB. Movies can be compressed to a smaller size but at the cost of viewing quality.
Primary storage is volatile; meaning it cannot retain data values indefinitely. In other words, when power is turned off, all contents are lost.
Secondary storage is non-volatile.
Unplug the power cord
How much does a 1GB SD Card cost?
It depends on the size of the card and the speed.
SD (Secure Digital Flash) media cards go from 64 MB to 2 GB
There is a similar but different standard, SDHC (Secure Digital High Capacity) for cards of 4 GB and higher.
SD cards range from under $5 to over $150 depending on the capacity and speed
$30-$40
What are the advantage of zip drive?
The purpose of a Zip drive is to decrease download time and save room on the hard drive. Zip files can be transferred faster by email. Windows XP has a built-in unzip program, making it easy to access the files.
Is data easier to change in rom or ram?
ROM (Read Only Memory) contains the data necessary to start the booting process, and is put there by the manufacturer. It is not meant to be altered by the user. RAM (Random Access Memory) is the volatile memory the computer user is meant to use in processing data. It is volatile as, unless the data is saved to the hard-drive before closing down the computer, the data is lost.
Where can one purchase a USB data cable?
One can purchase a USB data cable from most drugstores, including CVS, Rite Aid and Walgreens. One can also purchase USB data cables from electronics stores such as Best Buy or Radio Shack, and through online suppliers such as DHgate and Monoprice.
Computer temporary and permanent storage devices?
Temporary storage is ram, or memory, reason it is temporary is that when you switch the computer off, all information that was stored in memory is now gone.
Permanent storage would be the original type of ROM. It was written to once and could never be changed. That was mainly used for BIOS instructions. While hard drives are non-volatile, meaning they don't need power to retain their memory, they are not permanent.
Nonvolatile storage is hard drives (both internal and external), CD's, DVDs, floppies, USB devices (including flash memory), because data that is stored on these devices remain there until physically changed, or deleted. The data is not lost when the power is turned off.
