一、 課題內(nèi)容：
解讀二分頻電路梯形圖程序，設(shè)計(jì)四分頻電路梯形圖程序并寫出程序說明，畫出時序圖。
二、控制要求：
輸入點(diǎn)引入信號脈沖，輸出點(diǎn)輸出的脈沖是輸入脈沖的四分頻信號。
二分頻時序圖：
三、 課題要求：
1. 根據(jù)控制要求完成設(shè)計(jì)并調(diào)試成功
2. 完成課程設(shè)計(jì)說明書
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