Question

求大神翻译成英语，谢谢。

篮球竞赛24秒倒计时器可用于篮球比赛中对球员持球时间24秒限制，不仅能进行时间追踪，还具有启动、暂停、连续以及光报警功能，同时采用七段数码管来显示时间，方便地实现断点计时功能，当计时器递减到零时，会发出报警信号。本设计主要由五个模块构成：秒脉冲发生器、计数器、显示电路、控制电路和报警电路，其中秒脉冲产生电路由555定时器和辅助电路元件构成，计数器由两片74LS192D同步十进制可逆计数器构成，显示电路由七段共阴数码管组成,光报警电路由发光二极管组成。

Answer 1

Basketball contest 24 seconds countdown timer can be used for basketball player holding the ball in the right time to 24 seconds limit, not only for time tracking, but also has to start, pause, continuous and light alarm function, while using seven-segment digital tube display time and easily implementing breakpoints timing function, when the timer decrements to zero, an alarm signal. This design consists of five modules: second pulse generator, counter, display circuit, control circuit and alarm circuit, in which the second pulse generating circuit 555 timer and auxiliary circuit components, the counter is synchronized by the two 74LS192D decimal constitute reversible counter , by the seven-segment display circuit common cathode LED tubes, light alarm circuit by light-emitting diodes.

Answer 2

Basketball competition 24 second countdown timer can be used for the basketball game on the player holding time 24 seconds limit, not only for time tracking, also has a start, pause, continuous and light alarm function, at the same time using seven digital tube to display time, conveniently realize the breakpoint timing function, decreasing to zero when the timer, it will send the alarm signal. This design mainly consists of five modules: the second pulse generator, counter, display circuit, control circuit and an alarm circuit, wherein the second pulse generation circuit is composed of the 555 timer and auxiliary circuit elements, the counter is composed of two 74LS192D synchronous decimal reversible counter, display circuit is composed of seven segments digital tube composition, light alarm circuit. The light emitting diode.