It is the third-generation PLD development system launched by Altera (Altera’s fourth-generation PLD development system is called: Quartus, which is mainly used to design large-scale CPLD/FPGA with 60,000-1 million gates) .Designers using MAX+PLUSII do not need to be proficient in the complex structure inside the device. Designers can use their familiar design tools (such as schematic input or hardware description language) to create designs, and MAX+PLUSII automatically converts these designs into the final required format. It is designed to be very fast. For the general circuit design of several thousand gates, using MAX+PLUSII, it only takes a few hours from design input to device programming completion for the user to get the designed logic circuit. Design processing is typically completed within minutes. Especially in terms of schematic input, Maxplus2 is recognized as the easiest to use and the friendliest human-computer interface PLD development software, especially suitable for beginners.