protues仿真使用问题，新手求助

刚开始学习protues仿真，，这是什么情况的，是软件破解的问题，还是程序的问题？怎么解决的？求指点

PROSPICE 8.02.00 (Build 18620) (C) Labcenter Electronics 1993-2015.
DSIM model LCDALPHA.DLL failed to authorize - Missing or invalid Customer Key.. [LCD1]
mixed model MCS8051.DLL failed to authorize - Missing or invalid Customer Key.. [U1]
DSIM model LCDALPHA.DLL failed to authorize - Missing or invalid Customer Key.. [U1]
Loaded netlist 'C:\Users\ASUS\AppData\Local\Temp\LISA8854.SDF' for design '09.pdsprj'
Real Time Simulation failed to start.
Simulation FAILED due to fatal simulator errors.

把红色部分提示复制到百度上搜索看看

《80C51单片机仿真设计实例教程——基于Keil C和Proteus》清华大学出版社ISBN 978-7-302-41682-1，内有常用的单片机应用100案例，用于仿真实验操作，电路与程序真实可靠可信可行。还有介绍Keil C和Proteus，有得你看和学。