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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
The most common removable magnetic storage device?
Hard Disk drives are commonly used storage devices that stores system files,configuration settings & user's data on a Personal Computer.
These are mostly used types of Hard disk drives that are commonly used in Personal Computer:
Based on connectors:
1. IDE drives
2. SATA drives
3. USB drives
Based on Media:
1. Magnetic disks
2. Flash disks
What device is used to store data for long term storage?
Depends on how much memory you will need:
100-700 MB=Compact Disc
2-32 GB=Flashdrive
100-2000 GB(2 TB)=Portable Hard Drive
MB=Mega Byte
GB=Giga Byte
TB=Tera Byte
add From a historic point of view, the most dependable forms of information storage have been Cuneiform; writing on paper; and wax cylinders.
Modern substrates such as magnetic tape have been found wanting, as have some CD formats.
Flash drives and similar storage devices are susceptible to irradiation.
Magnetic disks are susceptible to magnetic fields.
Why random access memory as temporary storage?
Before RAM had such wide-spread usage, two of the most important parts of a computer were the microprocessor (CPU) and storage (Hard Disk, or in many cases, just a Floppy Drive). However, microprocessors were much faster, and could not reasonably operate near their full potential because they had to 'wait' for the downright sluggish storage drive to send it data.
Random Access Memory (RAM) acts as a high speed middleman, providing enough data from the hard disk for microprocessor to use at any given time without making it wait.
What is the maximum storage on the magnetic media?
Magnetic storage
optical storage
solid-state storage
storage capacity
Is a hard disk magnetic or optical?
Magnetic storage is used on hard drives and floppy disks.
Sectors of the disk are charged magnetically and are easily changed later.
Optical storage uses a laser to read data.
On a cd/dvd, the laser picks up tiny marks made starting in the center
and rotating outward.
How many images does an SD card hold?
It depends what the capacity of the SD card is. They come in various capacities rated in megabytes or gigabytes e.g. 256mb or 1gb.
It also depends on the size of the image. If you have a high quality camera then you could be saving pictures that are about 2-3mb in size. You can roughly work it out by dividing the capacity of your SD card by 3!
What is the capacity of a PROM primary storage device?
As we know, ROM i.e. read only memory can't be altered and comes in in-built form with the computer system. The user can't make any changes. To overcome this problem PROM came into existence. PROM i.e. programmable read only memory allows the user to program their own. Once the chip is prepared again user can't edit it. But also now the technology have been so developed that now we can erase our data and it gave two type of PROM i.e. EEPROM and UVPROM which are erased through high electric pluse and with the help of UV rays respectively. Remember, there is still not the concept of editing the data.
Why would you use magnetic tape storage?
this is a backup method typically used in server/client enviroments. at the peak of usage, it was far more expensive to buy a new hard drive for backup purposes, and would take multiple floppy disks to backup a network (Not to mention a ton of time) Magnetic tape storage offers relatively quick back up speed.
What is the Computers main storage device?
A computer's main internal long term storage is its hard disk or solid state drive(SSD). The computer's main short term memory is its RAM. There is often confusion between these two things. Memory, when talking about computers refers to RAM, while Hard Drive refers to the hard disk/SSD.
Which forms of storage are referred to as optical media?
An optical storage medium such as a CD or DVD can store audio and video files, respectively. DVD's are also capable of storing images and other data.
How long do stores keep surveliance videos?
After extensive research on this, I'd have to say at least 30-60 days, but especially with the latest DVR systems, some companies may keep up to 2 years of footage easily.
What are the Characteristics of the secondary storage devices?
Features of secondary storage devices include the ability to quickly store information, mirror primary storage, and to be used in the event of catastrophic failure. USB flash drives are commonly used for secondary storage.
How much storage does a CD-rom have?
A CD-RM used to be able to store up to 650MB of information. CD-ROMs are now able to store up to 700 MB of data or 80mins. of Audio. and hold music like mac lethal and AC/DC
Which storage device use magnetic film or aluminum platters for storing data?
Hard Disk Drive, Floppy Drive
Why is a DVD storage device important?
The DVD is the next generation CD. The DVD store more data, audo, or video than the CD.
A DVD-ROM drive can be used to view DVD Movies, install large applications, and to access a large amount of files.
Some DVD-ROM drives are capable of writing to DVD, enabling users store and backup anything they so chose to. Some users burn DVDs with videos to be viewed by others.
What is the difference between USB and a floppy disk drive?
USB is a standardized bus for connecting exernal peripherals (printers, scanners, keyboards, mice, flash drives, hard drives, etc...) to a computer. A floppy disk drive is an outdated method of storing data. It uses a thin sheet of coated plastic, usually inside a firmer plastic shell, to store data.
32000 kB=
262,144,000 bits
32,768,000 bytes
32,000 kilobytes
31.25 megabytes
0.0305175781 gigabytes
0.0000298023 terabytes
0.0000000291 petabytes
1 Mb (megabit) is 128kB (kilobytes), so just divide 32000 by 128 = 250.
Do people use floppy disks today?
I still use floppy disks for backing up some small files, like Word Documents, Text Files, and small "WAV file sound effects when I don't have any CDs or my flash drive is full.
I still have some old DOS games on floppy that I still play sometimes, though I have them backed up on CD, but I still play the games on Floppy if I can't find the CD.
I also maintain an Emergency Boot Disk, in case my computer crashes or gets hit by a virus and I need to go into DOS to resurrect the computer.
My School has older computers in the Social Studies computer lab that has computers with floppy disks, but I've never used them, I have a Pen drive for that! But I've seen the School IT guy use them to keep these old machines going.
My current Workplace has a few older printing presses that need to be "calibrated" using 4 unmarked floppy disks, in order, or the margins will be off and that docked from your pay. Luckily they copies of copies of copies of the original disks and they are different colors, so they always go Yellow-Blue-Black-Grey, Yellow-Blue-Black-Grey, etc.
The U.S. Government has a protocol that sensitive, classified military documents, such as Nuclear Defense Information, that was written in the 1980s, when floppy disks were the only way to distribute computer information. It would cost so much to transfer all the information to a more modern format, dispose of the old disks and write new protocol that they continue to use floppy disks to distribute this information in 2010 as they did in the 1980s.
There are a lot of older technology still in daily use that requires the use of floppy disks, like industrial equipment and cash registers. I went shopping early at a thrift store (shortly after they opened) once and I had to wait for them to boot the register from 3 floppy disks to buy some clothes, this was in 2008, too!
I remember saving some songs I had composed on an electric keyboard using a integrated floppy disk and could play them as "MIDI" files either on the keyboard or on my computer! But that was back in 2003.
Older digital cameras store their pictures on a floppy disk, also. Most of those cameras are of better quality than the modern, cheap flash-based digital cameras, film-like without the film. Though many of these have been abandoned in favor of new, flsh-based cameras.
Many Developing and Third-World countries use older, obsolete computers that have no other way to transfer and store data than floppy drives, after the developed world deemed them to be "obsolete" and were considered "junk" their still serving Latin America, Africa, Asia and the Islands as daily work-horses in homes, schools, hospitals, businesses and government offices.
As you can see floppy disks are still used, just usually as a legacy system, once all these technologies clunk out, they will be obsolete.
