Method for registering and scheduling execution demands

A method for registering and scheduling execution demands, comprising steps of:

• Step (a):
• providing an execution demand register including a plurality of execution demand registering flags correspondingly describing whether an identical number of jobs are registered execution demands or not and execution priorities of the jobs;
• Step (b):
• providing a lookup device, and using all possible values of the execution demand registering flags as addresses to respectively store thereinside a job sequence permutation, initial position and registering number corresponding to the job sequence permutation;
• Step (c):
• when at least one job has to be executed successively, setting the value of the execution demand registering flag corresponding to the job to complete execution demand registering and update;
• and
• Step (d):
• in scheduling, using the value of the updated execution demand register as a lookup address to acquire the initial position and registering number corresponding to the lookup address from the lookup device and find out the job sequence permutation according to the initial position and registering number to complete scheduling.