The job scheduler function which selects jobs and job steps to be executed, allocates input/output devices for them, places them under task control, and at completion of the job, supplies control information for writing job output on a system output unit.

• 作业调度程序中的一种操作程序,选取要执行的作业和作业步、为它们分配输入输出设备、将它们置于任务控制程序的控制之下、并在作业完成时提供控制信息,以便在系统输出设备上写作业输出结果。