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What is Digital Data? Definition, Features

Digital data is the data that shows other forms of data by using specific machine language systems that are interpreted by a variety of technologies.

The binary system is one of the most fundamental systems is that stores complex audio, video and even text information. Data is stored in binary characters ones and zeroes or on and off.

One of the major advantages of digital data is that even the most complex analogue inputs can be represented with a binary system. The digital interface impresses businesses and government agencies to explore new territories in the data processing. Digital data is needed for various entities as it helps in maintaining data collected in a digitised manner. 

Features of Digital data 

One of the main characteristics of digital data is that it converts real events into digital form. This is done by adopting different techniques which aid in the conversion of physical scenes to digital forms. A proper data transfer system can be used to create a digital image. Similar techniques can be used to convert audio files into digital form. 

Also Read: What is End-User Computing (EUC)? Benefits & Advantages

Digital Data Storage 

The format for storing and backing up computer data on tape from Digital Audiotape (DAT) technology is known as Digital Data storage (DDS). The main reason why DAT was created is for CD-quality audio recordings. Digital Data storage uses a 4mm band.

The storage tape drive basically uses a helical scan for recording. It consists of two reading and two writing heads respectively.  In case errors are present then the write heads will rewrite the data.

A saved file can be restored with the help of recovery software which reads the directory of the files at the beginning of the tape at the location of the data, after which the data is checked and then saved into the hard disk.

In order to manage the storage and retrieval of data from Digital data storage, special software is required because it cannot update a saved file to the same location where it was saved originally. 

Four type of DDS drives 

Below mentioned are the four types of DDS drives:

  1. DDS1: The storage capacity of DDS1 is up to 2GB of uncompressed data on a 120-minute cartridge. 
  2. DDS2: The storage capacity of DDS2 is up to 8GB data in compressed format on the 120-minute cartridge. For small network servers, it is supreme.
  3. DDS3: The storage capacity of DDS3 is up to 24 GB of data on a cartridge of 125 minutes. It is most ideal for medium-sized servers. The advantage or distinct feature of DDS 3 is that it eliminates electronic noise in order to have a cleaner data record. It is done by using the Partial Response Maximum Likelihood (PRML). 
  4. DDS 4: The storage capacity is up to 40 GB of data in a 125-minute cartridge. The parties most benefited by DDS 4 is generally the small and medium-sized business organisations. 

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