The meter ( which is called pccm2002 for short ) is designed on the basis of mcs - 51 single - chip microcomputer technique . the hardware is composed of single - chip microcomputer module and electrochemical module . the single - chip microcomputer module can be divided into five parts , cpu circuit , a / d and d / a circuit , peripheral memory circuit , i / o interface circuit , distributing address circuit ; the electrochemical module is made up of potentiostatic circuit , galvanostatic circuit , potentiostatic - galvanostatic ( p - g ) conversion circuit , signal measuring circuit . the software of the meter is edited by c51 language , it is well - structured and module . all program modules have been linked into an executable files after compiled separately , then copy to eprom 恒電位控制下的恒電量智能化腐蝕監(jiān)測(cè)儀采用基于mcs - 51單片機(jī)技術(shù)的智能化設(shè)計(jì),儀器硬件由單片機(jī)系統(tǒng)模塊和電化學(xué)接口模塊組成,單片機(jī)系統(tǒng)模塊包括cpu電路,片外存貯器擴(kuò)展電路,模數(shù)和數(shù)模( a d和d a )電路,輸入輸出( i o )接口電路,地址分配電路,各電路模塊通過(guò)系統(tǒng)總線(xiàn)交換信息;電化學(xué)接口模塊主要由恒電位電路,恒電流電路,恒電位-恒電流( p - g )轉(zhuǎn)換電路,信號(hào)放大與采集電路組成。