Job Entry System


job entry system

[′jäb ¦en·trē ‚sis·təm] (computer science) A part of the operating system of a large computer system that accepts and schedules jobs for execution and controls the printing of output.

Job Entry System

(operating system)(JES) An IBM mainframe term. There arereally two JESs. JES2 is smaller and simpler, and can handle99.99% of most jobs that run on IBM's MVS operating system. JES3 is much bigger and requires really big ironto run.