Through discussion on digital transformation of electric automobile weighter, this paper expounds that making use of digital technique into automobile weighter can not only be easy to debug and maintain, but also increase the accuracy of its meaturing data and the stability of its operation, and still can be widely used in other electric weighters.

In this paper,Guangdong Province,the first 220kV digital station-three digital transformation of rural change station as an example to brief the technical structure of the digital substation.

It was analysed the railway locomotive maintenance of tooling equipment status, built the system hardware platform of digital transformation for a railway locomotive depot equipment transplanted μ C/OS- II embedded real-time operating system, on the basis of embedded real-time operating system, the software was analysised and designed.

The tiltmeter of quartz horizontal pendulum SQ-70 had been digitized transformation in October of 2003.

General CNC transformation of the need for;

NC transformation and development trend of machine tool;

In order to reduce investment in new equipment,some parts of old milling machine reform to CNC transformation.

The overall design plan for NC improvement on common lathe based on chip microprocessor control,the design of improvement on parts of lathe machinery and CNC system were discussed.

The design of NC improvement on C620 lathe was introduced,the improvement method and principle of mechanism and electric parts was analyzed.

The application of PLC in milling machine NC reform;

This paper presents a NC reform method for Y7215 worm wheel gear grinding machine that adopts 89C51 MCU to do the controlling.