Digital Media is a media in the form of audio, video, pictures, web pages and ebooks that are generated by digital signals. In the modern world of digital electronics, the term digital media is generally associated with digital technology.
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What is Digital Media
What is digital media, we all know the importance of technology in today’s world which is incomplete without Digital Media. The term Digital Media is derived from the way digital devices perform operation by counting digits.
From many years, the main application of digital media was only in the computer system. But today we used it in many other applications such as:
- Communication System
- Radar, navigation and guidance system
- Military systems
- Industrial process control
- Consumer electronics
Also Read: Why Technology is Important in Human Life
Evolution of Digital Media
In 1989, Tim Berners Lee, a British scientist, invented the World Wide Web (WWW) to share information worldwide. The Internet grew in potential day by day and became the main reason for the growth of digital media. So we can say that there is no existence of digital media without internet.
Today there are many platforms for sharing photos, audio, video, web pages, ebooks, etc. We use to share this data daily with many social and business apps. When we share any type of video, audio, document on the Internet it is comes under the digital media.
People make money on the Internet by sharing their content to help the people. A good example is YouTube, a YouTuber shares content on YouTube and makes money.
Television shows video to entertain people. In earlier times cable TV was very popular but now the time of 4k and 8k video clarity which proves the value and importance of digital media.
Many big companies promote their advertisements on TV to reach the people and TV channels earn from them. Therefore digital media is becoming a main source of advertising in today’s world.
What is Digital Media Signal
It is defined as the signal which has only a finite number of distinct values. Digital signals are not continuous signal. They are discrete signals.
Gottfried Leibniz invented the Binary code. If a signal has only two distinct values means zero or one then it is binary signal. So it is is simplest form of representing numbers using a pattern of ones and zeroes. The digital data is represented, stored and transmitted in the form of binary bits.
A signal have eight distinct values is an octal signal. so the octal numbering system uses the numerals 0, 1, 2, 3, 4, 5, 6, 7. Therefore it is used as a shorter representation of binary numbers by grouping binary digits into threes.
Similarly, hexadecimal signal is a signal which have sixteen distinct values. It is very easy to read as compare to Binary code, but not easy as compare to English! As computers get more sophisticated, programmers use hexadecimal less, but it is still in use.
Generation of Digital Signals
By using the process of Analog to Digital conversion we can obtain the digital signals from analog signals. Analog to digital converter do this job.
Because analog signals are difficult to store in memory, after conversion to digital, it is possible to store in memory. Thus we have seen what is digital media. For more on digital media.
Advantages of Digital Signals
- It is possible to store the digital data in memory.
- Likewise it is simple to process and transmit the digital signals more efficiently and reliably.
- Also as compare to analog signals the effect of noise is less in digital signals.