job entry system

1 definition found

job entry system - Free On-line Dictionary of Computing (26 May 2007) :

  Job Entry System
  
     <operating system> (JES) An IBM mainframe term.  There are
     really two JESs.  JES2 is smaller and simpler, and can handle
     99.99% of most jobs that run on IBM's MVS operating system
     .  JES3 is much bigger and requires really big iron
     to run.
  
     (1996-03-23)