PURPOSE: To grasp the present condition of an input data and to speedily deal with the result by immediately working the inputted data of a slave computer by a host computer and executing picture display and warning.

CONSTITUTION: First of all, data required for the work such as critical values or the number of machines to be daily produced are inputted by operating a key input means 11 on the host computer side. On the other hand, the inspected result data are inputted by key input means 11a-11d on the slave computer side and transmitted to the host computer by communicating means 12 and 12a-12d. The data are worked by a data work processing means 13 on the host computer side. The result of the work processing is formed as a graph and displayed on a screen by operating a picture display means 14. The inputted critical values are compared with the work data by operating a critical value over deciding means 15 and when the data exceed the critical values, an alarm tone is rung by operating a critical value over warning means 16.