With a masterâs degree, the average annual starting salary was $64,100. The 25th percentile earned $51,500, the 50th percentile made $62,000, and the 75th percentile earned $73,900.
First mechanical computer or automatic computing engine concept. In 1822, Charles Babbage purposed and began developing the Difference Engine, considered to be the first automatic computing engine that was capable of computing several sets of numbers and making a hard copies of the results.
At first, these were purely mechanical, but by the start of the twentieth century, they were run by steam.     The first of the modern computers was invented during World War II, in 1941 by a German engineer named Konrad Zuse.The computer was called the Z3 and was used to help design German airplanes and missles. Still others will say the abacus is the first computer. They were  invented by the Chinese between 2600 BC and 300 BC is considered as  the first computer ever. Abacus was used by the merchants and  Clerks in China.