对 2 0 0 3年第 9期《开关电路与布尔代数》一文中的全部电路图作如下修正 .图 3图 2图 1　 图 4关于《开关电路与布尔代数》一文中图形的修改@蓝向梅$江西南康赤土民族中学!341405 All the circuit diagrams in the article “Switching Circuits and Boolean Algebras” in the 9th issue of 2003 are revised as follows. Fig. 3 Fig. 2 Fig. 1 Fig. 4 The modification of the figure in the article “Switch Circuit and Boolean Algebra” @ Lan Xiangmei $ Nankang terracotta ethnic high school in Jiangxi Province!341405