(See attached file for full problem description)
The activities in the table apply to the computerization of a company's accounting system, presently operated manually.
(see chart in attached file)
All of the program routines can be written independently before the computer is installed and can be debugged using computer time rented from another company. No programs or routines can be written until the particular computer model has been selected, although forms and reports can be designed while alternative computers are being evaluated. No input or output routines can be written until the corresponding forms have been designed. The main processing programs and input routines are required to establish the accounting data bank, which can be created on rental equipment. The final activity before implementation is complete is to test and revise the system.
(a) Construct a PERT network for converting the accounting system
(b) What is the earliest time that the conversion can be finished assuming that the completion times are certain?
(c) Establish the early and late starting and finishing times for each activity. Which activities are critical?
This posting contains a CPM problem solution with computations for EF, LF, ES and LS