AS/400 User Guide
General Concepts
Computer Basics
Computers, while different, have three main operations in common:
The order in which these operations take place is controlled by a set of instructions called a
program or application. When you request a task to be accomplished by the computer, the
set of instructions is given to the computer by the program or application.
The most important program which controls the basic functions of the computer System is the
Operating System. The AS/400 Operating System is called OS/400. In addition to
controlling all devices connected to the computer, the Operating System controls the
numerous requests made by all connected users. The Operating System programs allocate
time and use of various requests and jobs being performed. The Operating System allows the
computer to:
Run more than one program at a time
Handle printed output
Schedule work
Communicate with users
The fourth operation that a computer System performs is Storage of information.
A computer System is simply a few components (input devices, processor, output devices, and
storage devices) being controlled by an Operating System.
2 DMS Systems Corp.
October 13, 2003
Version 1.0
To Next Page
Loading...