The tern "IT" refers to Information Technology that means "transfer ok knowledge".
OR
Information from one source to another source using any medium.
It can also be defined as "The industry that has evolved to include the study, science, and solution sets for all aspects of Data, Information and Knowledge management and/or processing."
Information technology is not something related to electronics only. It was evolved actually in the period when there were no words at all. No communications tools. In that age (somewhere between 3000B.C. and 1450A.D) people used to draw pictures for communication. And yes! Those pictures were the "IT". Here it clears the concept that Information Technology is actually just the transfer of information. Communication, Input technologies, Permanent Storage Devices, The First Numbering Systems and The First Calculators: "The Abacus" were the invention of this period. Communication was done with help of speakingnad drawing pictures. Input technologies were invented when Egyptians wrote on the papyrus plant. Chinese made paper from rags, on which modern-day papermaking is based. So on and so forth.
Gradually, years passed and with the passage of time, things changed. There was a period known as "Mechanical Age" (between 1450 and 1840). It was a time when there was a large and extensive explosion in the field of technology. People were leaned more towards this field. The contributers of this era were Johann Gutenberg who invented movable metal-type printing process. William Oughtred who invented analog computer and many more. It was the actual time of "Machines".
Then it was the time of "Electronic Age" (1840 and 1940). That age and the modern age has a lot resemblance in many aspects. Electronic Age was the begining of telecommunication. Vaccum tubes were invented for calculations instead of doin it mechanically. The first digital compuet was also invented in US during this period.
