Technology research on history of computers 03/07/2001 TABLE OF CONTENTS TABLE OF CONTENTS 1 HAVARD MARK 1 1 UNIVAC 2 Z3 2 HAVARD MARK 1 It was considered as the first digital computer. The mark 1 used mechanical telephone relay switches to store information and accepted data it processed. This was not a computer but instead was a highly sophisticated calculator. It was large in size measuring over 51 feet in length . It had many parts, most of them moving mechanical parts, which made …showed first 75 words of 361 total…

…showed last 75 words of 361 total…Harvard Mark I. The Z3 could perform three or four additions per second and multiply two numbers together in 4 to 5 seconds. The Z3's floating-point representation of numbers made it more flexible than the Mark I. The Z3 was the first machine in the world that could be said to be a fully working programmable computer with automatic control of its operations. Konrad zuse inventor of Z3 http://inventors.about.com/library/weekly/aa050298.htm