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The impressed current cathodic protection is one of the effort to prevent a metal from corrosion by supplying electricity to metal objects. However, the protection system that supplies electricity must always be monitored so that the electricity intake to the metal object is sufficient to protect it from the corrosion. The way how to monitor the electricity intake to the metal is to read the current intaking on the metal. To read the electric current more easly is to use an application software. This research talk about the application design to display the electric current intaking on the metal through the computer screen. In order to read the electric current directly, the Advantect Data Acquisition Modul (ADAM) devices are used. The results show that the appliation is able to display the value of protection current for iron plate steel with size 30x10 cm are between 0.15 A to 0.18 A while for iron plate with a size of 30x13 cm are between 0.20 to 0.24 A. These values also avoid the over protection.