The back-and-forth motion of a swing is an example of a pendulum. We see pendulums in other areas of our lives as well, such as in grandfather (also known as longcase) clocks.ther factors, including a pendulum's length, can also affect its motion. Background. A pendulum is an object hung from a fixed point that swings back and forth under the action of gravity.
More than a century later, however, the worldâs first computer was actually built. 1890: Herman Hollerith designs a punch card system to calculate the 1880 census, accomplishing the task in just three years and saving the government $5 million.
The first mouse. The first computer mouse was invented in 1963 by Douglas Engelbart at the Stanford Research Institute and was presented during a live public demonstration on December 9, 1968.This was the public debut of the computer mouse.he first computer mouse was invented in 1963 by Douglas Engelbart at the Stanford Research Institute and was presented during a live public demonstration on December 9, 1968.