One of the most interesting lessons from my classmates' presentations was seeing how communication technology has evolved across different generations. From simple writing tools to digital media, each invention changed the way people shared information and connected with one another.
The story begins with paper, which was developed in China around 105 BCE and is credited to Cai Lun. Before paper, people relied on materials such as stone tablets and papyrus to record information. The development of paper lowered costs and made writing more accessible. As a result, literacy and education expanded, while books, newspapers, and libraries became possible on a much larger scale.
Writing itself also evolved through the invention of the pen. Early writing instruments included reed pens, quill pens, and later dip and fountain pens. In 1888, John J. Loud patented the roller-ball pen, and in the 1930s Laszlo Biro improved the ballpoint design. By the 1940s, ballpoint pens had become increasingly popular, making writing more convenient for everyday use.
As technology advanced, communication expanded beyond the written word. The invention of radio was not the work of a single inventor. Maxwell published his theory of electromagnetic waves in 1865, and Hertz later proved the theory in 1888. Marconi built upon those ideas and helped transform radio into a practical technology, even establishing a radio factory in Britain.
Motion pictures also changed communication in powerful ways. Like radio, film had no single inventor. Early technologies such as the Kinetograph helped make motion pictures possible. More importantly, film changed how audiences viewed the world and transformed movies from simple documentation into a form of storytelling.
New innovations continued into the modern era. Television saw major breakthroughs beginning in 1884, followed by the first television in 1926. Decades later, CDs were developed by Philips and Sony in the 1970s for music. They became the dominant music format of the 1990s, encouraged greater use of digital technology, and provided a way to store files and other digital information.
Looking back, it is clear that each invention built upon the last. Whether it was paper, pens, radio, film, television, or CDs, every technology played a role in shaping how people communicate and share ideas.
AI Disclosure: AI was not used in the research and information for this blog post. All information came from notes that I took while attending lectures my classmates were presenting on their given subjects. I then prompted Microsoft Copilot Pro to help me shape my notes into a blog post of between 300-350 words written in a smooth professional style. Finally, I added appropriate images and captions to help break up the type and give the post a more professional look.

















