Recent years,with the rapid development of electronic industry , the applied range of electron component is expanding , it often requires to measure the size of resistance , capacitance , inductance.So, it is of great practical significance to design reliable,safe and convenient measuring instrument .
This article first makes an exposition of its function and requirement, then comes up the design scheme on function, last , design for the test of resistance , capacitance , inductance. This design utilized singlechip of AT89C52 to complete the test, among this process,resistance and capacitance is generated by multivibrator circuit ,while inductance is generated by colpitts , all these made the test of various parametric come true. Like this, on one hand ,the the measurement precision is high , on the other hand , it is convenient to intelligentize the instrument.
The software design of system uses Keil51 as simulation platform, writing system application software by hybrid programming with C language and assemble language; including main executive module ,display module , resistivity test module , capacity measurement module and inductance test module.
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