设计一个运动计分器，技术指标如下：

①“计分器”LED数码管显示位为两位；

②“计分器”的十进数位仅为两位数，即十位数、个位数；

③“计分器”应具有“复位”或“置数”控制功能；

④“计分器”应具有“加1”和“减1”的累计运算功能；

⑤“键控”应有“运算选择”（A），“计数（加1或减1）”（B）和复位或清零（C）三个按键开关。

根据要求，我要设计一个两位数的运动计分器，要使它具有置零和置数功能，当我们给一个时钟信号的时候，我们可以给它加一或者减一，我们分别用三个开关来控制运算选择，计数和清零，将其合理安装便可完成指标。

-Designing a Sports scoring device, the technical indicators are as follows: ① " Scorers"　LED digital display bit is two　② " scoring"　on the two-digit decimal digital only, namely the tens digit　 ③ " Scorers"　should have " reset"　or " set the number of"　control functions　④ " Scorers"　should have " plus 1"　and " minus one"　cumulative computing capabilities　⑤ " keyed"　should "　operation selection " (A),"　count (plus one or minus 1) " (B) and reset or cleared (C) three key switch. Upon request, I want to design a double-digit scoring device movement, it has to be set to zero and the number of features, when we give a clock signal, we can give it a plus or minus one, we were using three a switch to control the operation selection, counting and cleared it reasonable to complete the installation targets.