【正文】
單片機(jī)課程設(shè)計(jì)單片機(jī)程設(shè)計(jì)報(bào)告題 目: 拉幕式數(shù)碼顯示技術(shù) 電氣工程學(xué)院拉幕式數(shù)碼顯示技術(shù)摘要:單片機(jī)具有體積小,重量輕,控制靈活方便,價(jià)格低廉等優(yōu)點(diǎn),通常配以簡單的外圍電路就可以構(gòu)成一個(gè)完整的控制系統(tǒng)。--h(huán) 端,8 位數(shù)碼管的S1-S8 通過74LS138譯碼器的Y0-Y7 來控制選通每個(gè)數(shù)碼管的位選端。AT89S51 - 控制74LS138 的A,B,C 端子。在8 位數(shù)碼管上從右向左循環(huán)顯示“12345678”。能夠比較平滑地看到拉幕的效果。關(guān)鍵字:單片機(jī) AT89S51 74LS138 拉幕式數(shù)碼顯示Abstract: The MCU is small, light weight, control flexibility, the advantages of low cost, usually acpanied by a simple external circuit can form a plete control system. , 8bit digital control of the S1S8 through the 74LS138 decoder Y0Y7 to control the strobe tube each digital The bit select. AT89S51 MCU control 74LS138 of A, B, C terminal. In the 8bit digital tube display from right to left circle, 12345678. Can be smoothed to see the curtain effect. Keywords: MCU AT89S51 74LS138 pullscreen digital display目錄1總體設(shè)計(jì)方案…………………………………………………………3………………………………………………………………………………3……………………………………………………………3 ………………………………………………………………………………3…………………………………………………………………………5………………………………………………………………………………6……………………………………………………………………………………6……………………………………………………………………………………62芯片介紹………………………………………………………………7…………………………………………………………………7…………………………………………………………….7………………………………………………………………………………8……………………………………………………………………9 74LS138概述………………………………………………………………………………9 74LS138引腳介紹…………………………………………………………………………103電路模版設(shè)計(jì)……………………………………………………… 114軟件設(shè)計(jì)…………………………………………………………….12 總體設(shè)計(jì)方案………………………………………………………………… 12 匯編程序設(shè)計(jì)………………………………………………………………… 125總結(jié)…………………………………………………