History of the Computer - Computers and Technology by Michael Cooper
... When these beads are moved around, according to programming rules memorized by the user, all regular arithmetic problems can be done. Another important invention around the same time was the Astrolabe, used for navigation. Blaise Pascal is usually credited for building the first digital computer in 1642. It added numbers entered with dials and was made to help his father, a tax collector. In 1671, Gottfried Wilhelm von Leibniz invented a computer that was built in 1694.

Weight Loss One Step at a Time by Kory Doszpoly
... Calories in is simple. It is the food that you consume. Calories out is a little bit more complex. It will depend on the individual’s ability to process food and how active he or she is. The more you deviate from the way you live your life right now the greater the chances are for failure in any endeavor you might undertake. Therefore, I decided to focus on food intake exclusively and put exercise on the backburner for the time being. This is not to say that regular exercise is not ...