Paperback. New. ISBN 1387824759 9781387824755 [GB]

ISBN10: 1387824759, ISBN13: 9781387824755, [publisher: Lulu.Com] Softcover nach der Bestellung gedruckt Neuware - Printed after ordering - Do you remember Tymnet If you don't remember, are too young to remember, or fondly remember, this book is for you.This is the story of the worldwide network of online services that existed long before the Internet. Before the modern 'Cloud' there was time-sharing. The earliest computers were very expensive, single-task machines devoted to running a single program at a time. Each program loaded from a stack of punch cards, and ran its course without interacting with the outside world. Running payroll, for example, meant that the system was unavailable for any other function until the payroll was complete, the checks printed, the books balanced, and updates written to new punch cards and stored for the next run. This very expensive machine spent most of the time waiting on the peripherals, the printer, the card reader, and the card punch. We called this 'Batch Processing.'Multitasking was a brilliant innovation, allowing multiple programs to run simultaneously, sharing the expensive computing resources across multiple simultaneous batch jobs. Interactive time-sharing soon followed, allowing multiple users to interact with the computer in real time using electro-mechanical Teletype terminals.Then came networks. We know of ARPANET, but have forgotten the others.Several companies arose to offer ...
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