Synergy User Manual and Tutorial. - THE CORE MEMORY
Synergy User Manual and Tutorial. - THE CORE MEMORY
Synergy User Manual and Tutorial. - THE CORE MEMORY
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<strong>Synergy</strong> <strong>User</strong> <strong>Manual</strong> <strong>and</strong> <strong>Tutorial</strong><br />
In 1946, work started on the Electronic Delay Storage Automatic Calculator (EDSAC), a<br />
serial electronic calculating machine, at Cambridge. It was contained in a 5 by 4 meter<br />
room, had 3000 valves, consumed 12,000 Watts <strong>and</strong> could perform 650 instructions per<br />
second at 500kHz. Its mercury ultrasonic delay line memory could 1024 words 17 bits in<br />
length (35-bit “long” digits could be contained by using two adjacent memory “tanks”)<br />
<strong>and</strong> had an “Operating System” (called “initial orders”) that was stored in 31 words in<br />
read-only memory”. The input device consisted of a 6⅔ character per second 5-track<br />
teleprinter paper tape reader <strong>and</strong> output was performed on a 6⅔ character per second<br />
teleprinter. A commercial version of EDSAC, called LEO, which was manufactured by<br />
the Lyons Company, began service in 1953. Cambridge was the first university in the<br />
world to offer a Diploma in Computer Science, using EDASC, which was initially a oneyear<br />
post graduate course called Numerical Analysis <strong>and</strong> Automatic Computing. xxiv<br />
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