Information And Communication Technology Ict

The telephone was invented in the year 1876 by Alexander Graham Bell. He was awarded the first US patent for the invention of the telephone on March 7, 1876. The telephone revolutionized communication by allowing voice transmission over distances using electrical signals. Bell successfully demonstrated the telephone shortly after filing the patent, famously speaking the words, “Mr. Watson, come here, I want to see you.”

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A scanner is an input device that captures images, text, or documents and converts them into a digital format. The digital image can then be stored, edited, or shared using a computer. Scanners use sensors to detect the light reflected from the document and translate it into digital data. They are widely used in offices, schools, and industries for document archiving and digitization.