A 24XX reader circuit schematic

Test - lowercase jpg

Industrial Router Crystal 3.2*2.5mm 3225 26M (26.000MHZ) 12PF 10PPM 20PPM 30PPM

Photocoupler

This article describes a 24XX reader circuit using a printer interface. The pin definition of the IC card package is different from the pin definition of the IC chip. As shown below.