The Design of Password Authorization System on Reactor Based on NiosⅡ

The design of embedded password authorization system of reactor based on NiosⅡCPU is introduced here. This design uses the SOPC technology based on the Cyclone series FPGA as a digital bench to integrate microprocessor、timers、RS-232, PS/2,LCD,Flash, SDRAM,etc into a FPGA chip. The system has functions that it can be set work status, its password can be modified and storage via keyboard or computer, and its LCD can display information during working. It is proved that the system achieves design goals in primary experimentation.