SPC-PC Version 4.10

• When both the Auto Save feature and the Make Backup Copy feature are used for a given file, then a backup copy of the file is also created when the file is autosaved.

SPC-PC Version 4.02

• Improved skewness and kurtosis calculations
• Updated gage support (Real-time Gage Module)

SPC-PC Version 4.01

• Added ability to define the subgroup size based on date (or any other column)
• Improved the information passed to an executable file as part of Alerting
• Added option to Preferences dialog for determining prompts when opening chart files or data files with ODBC links

SPC-PC Version 4.0

• Added ability to open Excel files directly.
• Added right mouse button features to Spreadsheet, and expanded the right mouse menu for the Chart window.
• Added drag/drop for column width in Spreadsheet
• Added Gage Linearity Analysis
• Added start-up wizard
• Added context-sensitive Help buttons in each dialog box and window
• Added an option (in Preferences) for having the Edit bar on it's own bar
• Added support for the Starrett 761-2P multiplexer.

SPC-PC IV Version 3.7

• Added Gage R&R Analysis. New analyses include: Repeatability, Reproducibility, Bias (Accuracy), Performance, Linearity, and Stability.
• Added QA-Flow. New features include Flowcharts, Cause & Effect Diagrams, and Tree Diagrams.
• Added ability to import files from DOE-PC IV

SPC-PC IV Version 3.64

• Chart displays Chart query statement.
• The advanced Xbar and X charts display the term "user defined" when user-defined control limits are applied.
• Process Capability Charts display a numeric label for the Mean if the “Show Lines = Average” option is selected in the Chart Format Options dialog.

SPC-PC IV Version 3.63

• Ability to automatically run a program if an alert condition is met. Users can write executables to perform a multitude of functions, such as running command line mail senders, sounding bells, running wave functions, or signaling to external devices such as CNC's, PLC's, or databases. This function is enabled using a new interface for a Run line command in the Alert Condition Details dialog box.
• Ability to show upper spec, lower spec, and nominal lines on run chart. Enabled alerting in run charts, specifically for: Group average; Observation; Observation above upper spec; Observation below lower spec; Standard run tests (tests 2, 3, 4); User defined run tests (tests B, C, D)
• A list of the enabled Run Tests appears on the statistics for charts supporting Run Tests.
• The ability to attach one or more files (such as procedures, CAD drawings, flowcharts, etc.) to a given chart analysis or data file column in the Analysis Options dialog box. Attachments may be opened from a new button in the tool bar and from the File | Attachments menu command.
• Italian language support

SPC-PC IV Version 3.62

• Add support for up to 32 com ports in the gage DLL dialog.
• Ability to define the printed subgroups for a Summary control chart. In the Print dialog box, "Show Groups" FROM and TO allow users to specify a continuous range of subgroups to be plotted.

SPC-PC IV Version 3.61

• JPEG: Supports JPEG output. Now you can display your SPC-PC IV charts on your organization's website.
• Support for file-based data collector
• Added new DDE macro commands

SPC-PC IV Version 3.6

• Year 2000 Compliance
• Improved Multivariate analysis to: allow up to 1000 variables

  Provide T squared and SPE (Squared Prediction Error) control charts
  Provide Loadings chart to identify process variables' effect on selected Principal Component
  Provide Score Contribution charts to determine which process variable contributed to a shift in the T2 chart when the subgroup selected is an out of control group in the T2 control chart.
  Provide Error Contribution charts to determine which process variable contributed to a shift in the SPE chart when the subgroup selected is an out of control group in the SPE control chart.