diff --git a/chapters/chapter7.tex b/chapters/chapter7.tex
index 18c1d38..918ab83 100644
--- a/chapters/chapter7.tex
+++ b/chapters/chapter7.tex
@@ -611,26 +611,4 @@ \subsection{随机存储器（Random Access Memory）}
 \subsection{寄存器（Register）}
 1
 \subsection{栈（Stack）}
-1
-
-\section{分段显示器化简理论}
-1
-\subsection{分段显示器主要结构}
-1
-\subsection{显示矩阵、分段矩阵和数字矩阵}
-1
-\subsection{矩阵的初等变换}
-1
-\subsection{化简原理与细节}
-1
-
-\section{处理器结构}
-1
-\subsection{汇编语言}
-1
-\subsection{机器语言}
-1
-\subsection{处理器的拓扑结构}
-1
-\subsection{数据路径（Data Path）}
 1
\ No newline at end of file