This artiele explores the main development direction of measuring tool products in our country adopting modern new techniques such as electronic digital display and computer-aided measurement to develop capacitance-grate type electronic digital display measuring toois and realize the miniaturization and intllectualizaton of the machinery-electronic integrated products.

This paper provides a means of computer-aided measurement of frequency spectrum,and describes the principles and methods.

The computer aided measurement of generation lifetime has been studied, and a corresponding capacitance time ( C t ) transient measurement system has been designed.

A model for measuring relative depth on the fracture surface by means of computer aided instrumentation is built up according to the principle of measuring distance from stereo vision,and an improved Levine's method of detecting a pair of corresponding points is proposed.

On the base of establishment of a computer aided instrumentation and analysis system for analyzing metallic fracture surface, some methods in analysis of fracture surface, by means of computer graphics and image processing techniques for detecting of edges and corresponding points, are described in detail.

This paper brought forward a scheme that organically integrated the technology of CAD/CAM with CAT to meet the demand of the enterprise.

According to analyzing the environment of CAT system, user requirements and system function, this paper introduces a designing method of real-time multi-tasking software based on 32-bit WINDOWS operating system.