DOS system itself does not support multi-tasking. This source of the DOS multi-task under the simple routines

Packet : 447353dos系统下多任务列队处理c语言源程序.zip filelist
AN311X/
AN311X/DOIT/
AN311X/DOIT.H
AN311X/DOIT/DOIT.C
AN311X/DOIT/DOIT.EXE
AN311X/DOIT/DOIT.PRJ
AN311X/INSTALL/
AN311X/INSTALL/INSTALL.C
AN311X/INSTALL/INSTALL.EXE
AN311X/INSTALL/INSTALL.PRJ
AN311X/JOBSERV/
AN311X/JOBSERV/JOBSERV.C
AN311X/JOBSERV/JOBSERV.EXE
AN311X/JOBSERV/JOBSERV.PRJ
AN311X/UNINSTAL/
AN311X/UNINSTAL/UNINSTAL.C
AN311X/UNINSTAL/UNINSTAL.EXE
AN311X/UNINSTAL/UNINSTAL.PRJ

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