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Handbook of Manufacturing Engineering_下.pdf

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Handbook of Manufacturing Engineering_下.pdf

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information on quality status to all personnel with a need to know. Portable hand-held
computers and digital measuring devices enable certified operators and mobile inspectors
to enter data as they are processing or inspecting material. This permits timely investiga-
tion of any problems and expedites incorporation of solutions. In addition, computerized
data entry prompts individuals to enter needed information and will not let them uncon-
sciously omit data entry. This has been a major problem with paper systems: Key
information is omitted and often permanently lost because it was not entered at the time
of rejection, even when space was provided on the form for the data. Computerized data
entry has the added advantage that data is entered into the systems only once (there is no
transcription of data from paper puter) and may be analyzed and summarized in
reports in a cost-effective and timely manner.
Operations Data Center
“Central files” is another name frequently associated with the area within pany where
all es together, is cataloged and filed for either current or future reference. These
files often e large, requiring a staff of trained personnel to properly maintain them
and adequately pany reference needs. In some instances, the data being
retained or used in specific processes may pany proprietary, as in the case of
competition-sensitive processes or formulas; or the data may be classified, as it the case
of certain work for the government. Special procedures for handling such records must be
maintained, and limited-access storage facilities are required to protect this data ade-
quately. Likewise, access puterized data files must be protected by an authorizing
password system to limit access. Computer disks and tapes require regular backup and
limited-access storage in an area free from ic interference.
Records Retention
Many contracts contain clauses specifying the period of time t