"(Digital computers." . . . . . . . . . . . . "Limits in Computing Power"@en . . . . . "Limits in computing power" . . . "In its few decades of existence, digital computer performance has increased staggeringly. In the 1930s, computers performed operations a few per second; the largest contemporary machines are approaching 100 million per second. Most of this ratio of 8 orders of magnitude--has come from advances in electronic technology--relays to vacuum tubes to discrete solid state circuits to integrated microcircuits; some has come from internal logical organization and system architecture. Ultimately, the principles of physics must limit computer speeds. This paper, drawing on a number of research results, attempts to estimate the performance yet possible to achieve; but to put the subject in context, the authors briefly review some problems which demand super computers."@en . . . . "Information retrieval." . . "Computer Hardware." . . "RAND CORP SANTA MONICA CALIF." . . . . "Time studies." . . "Data storage systems." . . "Performance(engineering))" . .