This presentation explains the phased conversion method used when implementing or changing to a new Information System from the old one.

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CONVERSION METHODS
PHASED/GRADUAL CONVERSION
Guide: Jackson Tungamira

2. DEFINITION
• Phased conversion involves introduction of
the new system in phases or stages, gradually
replacing parts of the old system until
eventually, the current system is completely
replaced by the new system.
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3. OLD SYSTEM
NEW SYSTEM
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4. • It refers to the attempts that combines the best
features of the parallel conversion and direct
changeover, without incurring all the risk.
• In this plan, the volume of transactions handled by
the new system are gradually increased as the system
is phased in.
• New information system is broken down into smaller
functional components and the rest of the old system
remains in use.
• It gives part of the system to all users
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5. • A company working towards installing a new.
•A company working towards installing a new
financial system, implementing the new system in
one department at a time, the company converts
accounts receivables, account payables, payrolls
and among others.
•It is mainly used in large organizations and two
systems (the old system and the new system) are
operated at the same time
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6. ADVANTAGES OF PHASED
CONVERSION
•Allows users to get to the system gradually.
• Possibility of detecting and recovering from errors
without a lot of down time as the system is tested at
every stage.
•Staff training can be done in the stages.
•Ability to add features on-by-one.
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7. DISADVANTAGES OF PHASED
CONVERSION
• Needs a lot of time for full
implementation of the system.
• If a part of the new system fails there is
no back-up system, so data can be lost.
• It is relatively expensive as the system is
implemented in stages.
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8. • In summary, the recommended conversion method
would be phased conversion, where the current
paper based system is transposed with the new
system, process by process.
• Testing and training would occur during the
implementation of each new element during the
implementation.
SUMMARY
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9. • The time taken for complete conversion would
take a lot longer than direct conversion and more
expensive, but the risk of system catastrophic
failure is mitigated by the virtues of a phased
conversion.
• Extensive training would be required as the
current system and the new system are
diametrically distinct.
• With a phased conversion, the training could occur
over an extended period of time as opposed to all
at once.
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10. – l
THANK YOU
JACKSON TUNGAMIRA
JackSolutions (2016)
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