摘  要：片機(jī)AT89C51芯片作為本次核心控制元件，利用1602LCD液晶顯示器作為顯示器件，鍵盤(pán)輸入電路以及報(bào)警提示電路組成。通過(guò)硬件電路設(shè)計(jì)及軟件編程調(diào)試的結(jié)合，構(gòu)成了一個(gè)滿足籃球比賽所需的計(jì)時(shí)計(jì)分器。本系統(tǒng)可滿足倒計(jì)時(shí)方式顯示單節(jié)比賽剩余時(shí)間，可暫停比賽，顯示雙方得分，按鍵輸入可修改分值，如有錯(cuò)誤可進(jìn)行相應(yīng)的修改。當(dāng)控球時(shí)間超過(guò)24秒時(shí)、整場(chǎng)比賽結(jié)束時(shí)有聲音提示。系統(tǒng)符合一般籃球比賽計(jì)時(shí)器的工作要求。籃球比賽計(jì)時(shí)計(jì)分器因其功耗低、體積小、使用靈活、便于攜帶等特點(diǎn)，容易在各大高校中推廣使用，有很好的市場(chǎng)前景。

關(guān)鍵字： AT89C51 ， LCD1602, 計(jì)數(shù)器 ，計(jì)時(shí)器

Abstract: This article designs a system of basketball game timekeeping and scoring, which is based on the single-chip microcomputer. The system mainly through the single-chip microcomputer AT89C51 chips as the core control elements, using 1602 LCD monitor as a displaying component, the keyboard input circuit and alarm prompt circuit component.The hardware circuit design with software programmer debugging make up the system of basketball timing and scoring, which can be used in a basketball game. In a basketball game, this system can show the remaining time in a period, and also be suspended and display the scores of both sides, if there and mistake, the scores can be need through key inputting. When controlling the ball for more than 24 seconds and the game ends, the system is able to prompt by voice. So the system can be used as a common basketball game timer. Basketball game timing and scoring device because of its low power consumption, small volume, use agile, easy to carry and other characteristics, it easy to promote in colleges and have a good market prospect.

Keywords: ATS89C51; LCD1602; Counter; Timer