Abstract subject: Иностранный язык

Search engines
Internet search engines are one of the most well-known examples of contemporary innovation. Thanks to the conceptualization of a space that offers a much broader online experience for consumers, search engines became one of the leading tools of technological and internet information acquisition. Search engines function as knowledge base search systems, streamlining the capacity for human learning.
Cellphones
The global success of the cellphone changed the way people communicate. Before the cellphone, people relied on landlines and other methods of communication. This made communication not always readily accessible and confined someone to a specific location if they wanted to talk with other people. The creators of the cellphone saw a need for mobile communication and conceptualized the idea of a phone that was not confined to a cord. Though the cellphone went through many iterations over the years, it eventually led to the small portable device that exists today. Cellphones continue to evolve from modern era innovations and ideas.
Pianos
The piano is a musical instrument that evolved from the harpsichord between 1700 and 1720 by an Italian musical instrument maker. The inventor saw the need for a keyboard instrument that could play softly and loudly and could sustain notes on one set of keys. Original instruments of this variety lacked the capacity for all these features.
Erasable pens
Before the erasable pen, pens provided a permanent mark on your writing medium. This meant that a person unsatisfied with their work had to use whiteout or scratch through what they wanted to change. The inventor of this product saw a need for a solution to this issue and created a pen that could erase like a pencil.