Short for
Electronic Delay Storage Automatic Calculator, EDSAC was an early
computer dated around 1949. EDSAC performed
its first calculation at the Cambridge University in England. EDSAC used
mercury delay lines for memory and 3,000 vacuum tubes for logic. Programs were
input using 5-hole punched tape and output was via a teleprinter.
See also "The
Five Generations of Computers" in the
Did You Know...? section
of Webopedia.