Vorwort - SSS-Tools für Power System i Syntax System Services

Science (CS) curriculum. Heck, in the early 1980s, the primary CS course at Illinois Institute
of Technology consisted of writing FORTRAN on punched cards. And after all that expense,
you still had to design and program your system, which involved somehow getting requirements
from the user and translating them into something programmers could understand. As difficult
as that task is to this day, imagine what a nightmare it was back then!
So instead, it was simply more cost-effective to box up your (often hand-written) paper
transactions and send them to a Service Bureau, which would load up your programs, keypunch
your data into your files, run your reports, and then box them up and ship them back to you. It
wasn’t exactly instantaneous, but it was often overnight and definitely far less expensive than the
alternative.
Online Computing
One innovation that prolonged the useful life of the Service Bureau was the concept of online
computing. Terminals set up at the customer’s site connected remotely to the central computer
in the Service Bureau. These terminals could be used to enter data and, more importantly, to get
online information immediately. A whole new era of online, interactive computing came into
play. But it was still all running on a single, centralized computer. And this particular model
worked wonderfully through the ’80s and ’90s.
Read more about the following topics:
•Viva la Revolution
• DP Is in the House! DP Is in the House!
• The Real Revolution
• The Thick Client
• The Next Trend
• What’s Old Is New!
• Coming Soon to an Application Near You
...more information
MCPress Online - Februar 2006
www.inn-online.de < Seite > Seite: 45