Industrial Engineering and Production Management
The basic difference between PERT and CPM is that

Costs are considered on CPM only and not in PERT
Critical path is determined in PERT only
Guessed times are used in PERT and evaluated times in CPM
PERT deals with events and CPM with activities

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Industrial Engineering and Production Management
Dispatching

Regulates the progress of job through various processes
Is concerned with the starting of processes
Determines the programme for the operations
Prescribes the sequence of operations to be followed

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