EDVAC

The Electronic Discrete Variable Automatic Computer or EDVAC was invented in 1949 by John P Eckert and John W Mauchly . It costed $500,000 to create the EDVAC. The EDVAC followed the ENIAC and had similar designs and improvements. The EDVAC was the first multipurpose computer and had a large memory and was one of the first big mainframe computers, that also used binary. It had the ability to do addition, subtraction, multiplication, and division. It could perform these functions in just microseconds. It was built for the US Army Ballistic Research Lab and was able to run for 20 hours.