Nippon Express Thailand. เข้ามาทำงานเป้น System Analyst ที่นี้ได้ 2 ปี ได้มีโอกาศไปเรียนต่อที่ USA , DC ในปี 1999-2003 ที่ SouthEastern University , Washongton DC. USA
The AS/400 systems exclusively use the IBM Operating System/400 (OS/400). It is a multi-user operating system that works with the Licensed Internal Code (LIC) instructions to implement the functions that are basic to the AS/400 architecture. OS/400 can perform tasks under direct control of both the user and an application program.
The AS/400 system differs from the traditional systems in several ways. They offer more compatibility across the product line since only one operating system and architecture is used consistently across the entire family. The system offers very high performance compared to the earlier System/3X computers. This is achieved by a combination of faster processors, extended storage and improved fixed disk systems. The software architecture is different from that of more traditional systems. Implementing functions such as security, database and communications in microcode, and providing a one-piece operating system resulted in improved efficiency, consistency and simplicity.
AS/400's standard functions plus the many communications options and supporting software provide users with flexibility for various communications environments. The AS/400 application programming interface provides some new capabilities not found in earlier operating systems. The basic architecture of AS/400 systems makes for a very productive program development environment. The built-in database and single-level storage provide high-level structures and consistency. This along with the programming tools available for AS/400 can increase programmer productivity. The programmer has the flexibility to choose one of the following programming languages for their application programs:
* BASIC * C * CL command language * COBOL X3.23-1974 & X3.23-1985 * FORTRAN * Pascal * PL/I * REXX * RPG II & III
The AS/400 marks a new beginning in the business computing world. This new generation of systems with advanced technology and advanced applications serve as a growth platform for the customer to expand in application, size and network complexity.
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