What Does Storage Device Mean? ADP CS - First Semester
The Islamia University of Bahawalpur ADP Scheme to Study Computer Science 2021 Have 3 credit hours of Study On IT Skills Topic
Definition - What does storage device mean?
Basically an storage device is any type of computing device that is used to store, upgrade, or extract data files and docs even Pic's Music and Every Data. Storage devices can hold and store information temporarily and permanently. It may be internal or external to a computer, server, or computer.
A storage device may also be known as storage media or storage media depending on whether it is perceived as separate in nature (for example, “hard disk” versus “some hard disk space.”) Storage devices are an essential component of any device PC. It stores almost all data and applications on a computer, except for hardware firmware which is generally managed through separate ROM or ROM.
Storage devices are available in various forms, depending on the type of device on which it is based. For example, a standard computer has multiple storage devices including RAM, cache, and hard disk. The same device may also have optical drives and USB drives connected externally.
There are two different types of storage devices:
Primary storage devices:
Generally smaller in size, primary storage devices are designed to hold data temporarily and are internal to a computer. They have the fastest data access speed. These types of devices include RAM and cache memory.
Secondary storage devices:
Secondary storage devices are usually larger storage capacity, and they store data permanently. It can be either internal or external to the computer. These types of devices include the hard disk, optical drive and USB storage device.
Examples
- Hard disk disk
- Floppy disk
- Tape
- CD
- DVD and Blu-ray discs
- USB flash drive
- Secure digital card (SD card)
- Solid State Drive (SSD)
- Cloud storage
- Punch card
Hard disk drive
A hard disk drive (also known as a hard disk, HD, or HDD) can be found installed in almost every desktop computer and laptop. It stores operating system files and software programs, as well as user documents, such as photos, text files, video and audio clips. A hard drive uses magnetic storage to record and retrieve digital information to and from one or more fast-spinning discs.
Floppy disk
Also known as a floppy disk & FD, a floppy disk is another type of storage media that uses magnetic storage technology to store information. Floppy disks were once a popular storage device for computers and lasted from the mid-1970s until the beginning of the 21st century. The early floppies were 8-inch (203 mm) in size, but these were replaced by 5 1 1/4 inch (133 mm) drives, and finally a 3 1/2 inch (90 mm) version.
Tape
In the past, magnetic tape was often used to store digital data, due to its low cost and ability to store large amounts of data. The technology basically consisted of a thin piece of plastic magnetically coated around the wheels. Its relative slow and unreliable compared to other data storage solutions has now largely abandoned it as a media.
CD
Compact disc, commonly known as Compact Disc, is a form of optical storage, the technology that uses lasers and lights to read and write data. Initially CDs were only used for music, but in the late 1980's they also began to be used for storing computer data. Initially, the inserted CDs were CDs (read only), but this was followed by CD-R (CD-rewritable) and CD-RW (rewritable CDs).
DVD and Blu-ray discs
DVD (Digital Versatile Disc) and Blu-ray Disc (BD) are two digital optical disc data storage formats that have replaced CDs, mainly due to their larger storage capacity. For example, a Blu-ray disc can store 25 gigabytes (GB) of data on a single-layer disc and 50 GB on a dual-layer disc. By comparison, a standard CD is the same physical size, but contains 700 megabytes (megabytes) of digital data.
USB flash drive
Also known as thumb drive, pen drive, flash drive, memory stick, jump drive, and USB stick, USB flash drive is a flash memory data storage device that includes an integrated USB interface. Portable memory is generally more efficient and reliable than optical media, being smaller and faster, possessing much larger storage capacity, as well as being more durable due to the lack of moving parts.
Secure digital card (SD card)
A common type of memory card, SD cards are used in multiple electronic devices, including digital cameras and cell phones. Although there are different sizes, classes, and capacities available, they all use a rectangular design with one side "chipped" to prevent the card from being inserted into a camera or other device in the wrong way.
Solid State Drive (SSD)
A solid state drive uses flash memory to store data and is sometimes used in devices such as laptops, desktops, and laptop computers instead of a traditional hard drive. The advantages of an SSD over a hard disk drive include faster read / write speed, noiseless operation, increased reliability, and lower power consumption. The biggest downside is the cost, with an SSD offering less capacity than hard drives at similar prices.
Cloud storage
With users increasingly operating multiple devices in multiple locations, many online and cloud computing solutions are adopted. Cloud computing basically involves accessing services over a network through a group of remote servers. Although the idea of a "cloud of computers" may seem somewhat abstract to those who are unfamiliar with this metaphor, in practice it can provide powerful storage solutions for internet-connected devices.
Punch card
Punch cards (or punch cards) were a popular method of storing data used in early computers. Basically, it consisted of a paper card with punched or punched holes made by hand or machine. Cards are inserted into the computer to enable
Store and access information. This form of data storage media has largely disappeared as new and better technologies have been developed.
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