time sharing computer systems (9 résultats)

Hardcover. Etat : New. Etat de la jaquette : Fine. 1st Edition. 139 Pages.

Hardback. Etat : Fair. Ah, Time-Sharing Computer Systems (1972) by M. V. Wilkes ? a title that now sounds faintly quaint, like a pamphlet explaining how to queue politely for the village telephone. Yet in its day it addressed one of the most radical ideas in computing: that a computer might serve more than one person at a time without immediately collapsing into a sulk. Written by the distinguished British computer pioneer Maurice Wilkes , this book comes from an era when computers were not sleek objects on desks but room-filling mechanical monarchs attended by technicians, humming cabinets, and an atmosphere of serious purpose. In the early days, if you wanted to run a program you did not casually open a laptop. You prepared your instructions with great care, submitted them to the machine?s operators, and waited ? sometimes patiently, sometimes less so ? while the computer processed jobs one at a time like a very expensive bureaucrat. Time-sharing changed that. The idea was beautifully simple and mildly revolutionary: instead of running one task to completion before starting another, a computer could rapidly switch between many users? programs, giving each a small slice of processing time in turn. To the human participants it would feel as though the computer were working solely for them. In reality the machine was juggling requests at dazzling speed, quietly distributing its attention across a room full of hopeful programmers. Wilkes? book explores the architecture, theory and practical difficulties of this system ? and difficulties there certainly were. Designing a time-sharing system required balancing processor scheduling, memory allocation, storage management and user interaction in a way that would keep dozens of programs from colliding disastrously. One careless piece of code could still bring the whole enterprise crashing down, which gave early system designers a healthy respect for careful engineering and an enduring distrust of overly enthusiastic graduate students. What makes Time-Sharing Computer Systems so fascinating today is that it documents a turning point. Prior to time-sharing, computing was largely a batch activity : programs submitted, results returned hours later. Time-sharing transformed computers into something more interactive. Suddenly users could type commands and see responses almost immediately. The computer began to feel less like an inscrutable calculating engine and more like a collaborative partner ? albeit one that occupied an entire room and required a cooling system worthy of a small power station. In many ways this book captures the moment when modern computing culture began to emerge. Concepts we now take for granted ? multiple users, interactive terminals, operating systems managing resources behind the scenes ? were once daring innovations requiring meticulous design and bold experimentation. Wilkes writes with the calm authority of someone helping to invent the rules while explaining them. The tone, naturally, is reassuringly serious. This is a book from a time when technical works assumed their readers possessed both patience and a tolerance for diagrams of system architecture. There are discussions of scheduling algorithms, memory management schemes, and the subtle art of ensuring that one user?s program does not accidentally devour the entire machine. It is not flashy, but it is quietly foundational ? the sort of engineering text that helped shape the way computers operate to this day. Seen from the twenty-first century, the irony is delightful. The world described here ? multiple people sharing the power of a single computer ? is precisely the principle behind modern cloud computing. Billions of users now rely on vast networks of machines that divide their processing power among countless tasks at once. The scale has changed, the machines have shrunk, but the essential idea Wilkes describes remains astonishingly relevant. This particular copy is in good condition , its pages still ready to escort the curious reader back to a time when computing was equal parts ambition, mathematics, and cautious optimism about what might happen if we persuaded a machine to serve several people simultaneously. For collectors of vintage computing literature, historians of technology, or anyone who enjoys glimpsing the moment when the digital world began learning how to multitask, Time-Sharing Computer Systems is a quietly important artifact. Available now from Crappy Old Books , where yesterday?s technological revolutions patiently await their next curious reader.

Hardcover. Etat : Very Good. Etat de la jaquette : Very Good. 2nd Revised edition. Gray cloth covered boards with gold spine titles; minimal wear; 8vo - over 7 3/4" to 9 3/4" tall; jacket is worn, lower corner of front flap clipped; previous owner's name on free front endpaper; interior clean and unmarked; 102 pages.

Hardcover. Etat : Good+. Etat de la jaquette : No Dust Jacket. First Edition. 102 pages; Ex-Library copy with usual identifiers. Light fading to the covers and to pages. Very minor foxing to the top exterior edge of textblock only. Good condition otherwise. No other noteworthy defects. No markings on text pages. ; - Your satisfaction is our priority. We offer free returns and respond promptly to all inquiries. Your item will be carefully cushioned in bubble wrap and securely boxed. All orders ship on the same or next business day. Buy with confidence.

Etat : Buone. inglese Condizioni dell'esterno: manca sovracopertina - leggermente logorata Condizioni dell'interno: Tracce di umidita'.

Etat : Poor. This is an ex-library book and may have the usual library/used-book markings inside.This book has hardback covers. In poor condition, suitable as a reading copy. Please note the Image in this listing is a stock photo and may not match the covers of the actual item,350grams, ISBN:

LeatherBound. Etat : New. BOOKS ARE EXEMPT FROM IMPORT DUTIES AND TARIFFS; NO EXTRA CHARGES APPLY. Leatherbound edition. Condition: New. Leather Binding on Spine and Corners with Golden leaf printing on spine. Bound in genuine leather with Satin ribbon page markers and Spine with raised gilt bands. Pages: 168. A perfect gift for your loved ones. Reprinted from 1975 edition. NO changes have been made to the original text. This is NOT a retyped or an ocr'd reprint. Illustrations, Index, if any, are included in black and white. Each page is checked manually before printing. As this print on demand book is reprinted from a very old book, there could be some missing or flawed pages, but we always try to make the book as complete as possible. Fold-outs, if any, are not part of the book. If the original book was published in multiple volumes then this reprint is of only one volume, not the whole set. IF YOU WISH TO ORDER PARTICULAR VOLUME OR ALL THE VOLUMES YOU CAN CONTACT US. Resized as per current standards. Sewing binding for longer life, where the book block is actually sewn (smythe sewn/section sewn) with thread before binding which results in a more durable type of binding. Volume Report (University of Illinois at Urbana-Champaign. Dept. of Computer Science) no. 722 Language: English Pages: 168 Volume Report (University of Illinois at Urbana-Champaign. Dept. of Computer Science) no. 722.

Hardcover. Etat : Near Fine. Etat de la jaquette : Very Good. 1st Edition. McGraw-Hill Series in Computer Science, Saul Rosen (editor) Dept. of Applied Analysis, SUNY Stony Brook, New York. 1967. 734 pages including index. First edition, first printing with full numberline including 1. Book is tight and clean. Binding and hinges are strong and sound. Pages and endpapers are bright and clean. Tan cloth panels are bright and clean; stamped design and titles are bright on front and backstrip. No writing within. Original, rare DJ with $12.50 price intact on DJ flap. DJ shows minor handling and wear. Minor shelf-rubbing. Shallow-chipping at crown, rubbing along base. A couple of very small closed edge tears. Author and editor, Saul Rosen, was a pioneer in Computer Science, known for designing the software of the first transistor-based computer Philco Transac S-2000, and for his work on programming language design which influenced the ALGOL language. A seminal Computer Science classic in the first edition, first printing, in collectible condition, in its rare, original, scarce DJ. Near Fine/VG+.

1st Edition. Designed by Seymour Cray and James E. Thornton, manufactured by Control Data Corporation 6600 (CDC 6600) was the world's first successful supercomputer. Thornton, the author of the first paper, was personally responsible for most of the detailed design of the Control Data model 6600 system and is considered the "hidden genius" of the 6600" (Wikipedia). "The 6600 had 400,000 transistors and more than 100 miles of wiring. In addition to a blazingly fast floating-point processor, it had 10" functional units and 10 â??peripherals and control processors' that did housekeeping and input/output tasks at the same time" (CDC 6600's, Computer History; Jadhav, Advanced Computer Architecture and Computing, 9). CONDITION & DETAILS: Illustrated throughout with technical drawings. Previous owner's signature on front paste-down. Bound in blue cloth; silver lettered on spine and front board; tightly bound with slight rubbing at the edges. Bright and clean throughout. Very good to near fine condition.