文件名称:caluctor
介绍说明－－下载内容均来自于网络，请自行研究使用
这是一个比较简单的倒计时计数器，鄙人有空的时候做的-This is a relatively simple countdown counter, when I free to do
(系统自动生成,下载前可以参看下载内容)
下载文件列表
练习2-计算周长和面积
....................\Project10604100111.cfg
....................\Project10604100111.dof
....................\Project10604100111.dpr
....................\Project10604100111.exe
....................\Project10604100111.res
....................\Unit10604100111.dcu
....................\Unit10604100111.ddp
....................\Unit10604100111.dfm
....................\Unit10604100111.pas
....................\Project10604100111.cfg
....................\Project10604100111.dof
....................\Project10604100111.dpr
....................\Project10604100111.exe
....................\Project10604100111.res
....................\Unit10604100111.dcu
....................\Unit10604100111.ddp
....................\Unit10604100111.dfm
....................\Unit10604100111.pas