Pre – Mechanical is the earliest age of technology. It can be defined as the time between 3000 B.C. and 1450 A.D. When humans first started communicating, they would try to use language to make simple pictures. Abacus was invented in this period after the development of numbering systems
This is the connections between our current technology. The mechanical age can be defined as the time between 1450 and 1840. It is a very popular mechanical computer capable of adding, subtracting, multiplying, and dividing two numbers.
The electromechanical age describes the beginnings of telecommunications. This age can be defined as the time between 1840 and 1940. Several technologies were invented in this period such as the Morse code, telephone, radio.
These electronics used for electronic switches, in the form of vacuum tubes. The major benefit
of electronic switches was that they could ‘open’ and ‘close’ thousands of
times faster than relays.