Timeline of Computer History
 

1951  
Computers
MIT Whirlwind
MIT´s Whirlwind debuted on Edward R. Murrow´s "See It Now" television series. Project director Jay Forrester described the computer as a "reliable operating system," running 35 hours a week at 90-percent utility using an electrostatic tube memory.
Start of project:1945
Completed:1951
Add time:Approx. 16 microseconds
Input/output:cathode ray tube, paper tape, magnetic tape
Memory size:2048 16-digit words
Memory type:cathode ray tube, magnetic drum, tape (1953 - core memory)
Technology:4,500 vacuum tubes, 14,800 diodes
Floor space:3,100 square feet
Project leaders:Jay Forrester and Robert Everett
LEO
England´s first commercial computer, the Lyons Electronic Office, solved clerical problems. The president of Lyons Tea Co. had the computer, modeled after the EDSAC, built to solve the problem of daily scheduling production and delivery of cakes to the Lyons tea shops. After the success of the first LEO, Lyons went into business manufacturing computers to meet the growing need for data processing systems.
UNIVAC I
The UNIVAC I delivered to the U.S. Census Bureau was the first commercial computer to attract widespread public attention. Although manufactured by Remington Rand, the machine often was mistakenly referred to as the "IBM UNIVAC." Remington Rand eventually sold 46 machines at more than $1 million each.F.O.B. factory $750,000 plus $185,000 for a high speed printer.
Speed:1,905 operations per second
Input/output:magnetic tape, unityper, printer
Memory size:1,000 12-digit words in delay lines
Memory type:delay lines, magnetic tape
Technology:serial vacuum tubes, delay lines, magnetic tape
Floor space:943 cubic feet
Cost:F.O.B. factory $750,000 plus $185,000 for a high speed printer
Project leaders:J. Presper Eckert and John Mauchly

 


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