广告剩余8秒
文档加载中
[精品]1大自然的语言指的是什么一,1,自然,指的是什么,指什么,指自然
扫扫二维码，随身浏览文档
手机或平板扫扫即可继续访问
[精品]1大自然的语言指的是什么
举报该文档为侵权文档。
举报该文档含有违规或不良信息。
反馈该文档无法正常浏览。
举报该文档为重复文档。
推荐理由：
将文档分享至：
分享完整地址
文档地址：
粘贴到BBS或博客
flash地址：
支持嵌入FLASH地址的网站使用
html代码：
&embed src='/DocinViewer-4.swf' width='100%' height='600' type=application/x-shockwave-flash ALLOWFULLSCREEN='true' ALLOWSCRIPTACCESS='always'&&/embed&
450px*300px480px*400px650px*490px
支持嵌入HTML代码的网站使用
您的内容已经提交成功
您所提交的内容需要审核后才能发布，请您等待！
3秒自动关闭窗口avr单片机中语句“DDRD &= ~(1 && PD2);”什么意思？ 谢谢_百度知道
avr单片机中语句“DDRD &= ~(1 && PD2);”什么意思？ 谢谢
AVR编写程序最好加上这个头文件#include &macros.h&.（ICCAVR）这句写成DDRD&=~BIT(2)就可以，不用这样麻烦。最简单的理解：DDRD|=BIT(2);
//PD2脚输出高电平，其余的脚原来是什么电平不会变DDRD&=~BIT(2);
//PD2脚输出低电平，其余的脚原来是什么电平不会变&(与)可以理解为乘的运算，PD2口取反为0后，无论原来的PD2口是什么电平，一乘它都会变成0，关系是：0&1=0，1&0=0，1&1=1，0&0=0
其他类似问题
为您推荐：
就是把PD2所对应的DDRD的位清零，其余不变
就是将PD2对应的管脚置零
把1左移PD2位取反，然后和DDRD与，就是PD2所对应的DDRD的位清零，其余不变
等待您来回答
下载知道APP
随时随地咨询
出门在外也不愁支持键盘← →键翻阅图片
http://imgbbs.ph.126.net/V5zD6pD2v5r9BF3plvODEQ==/1714370.jpg
http://imgbbs.ph.126.net/rPRF3xNlItH5jOI8fWXUOg==/1714371.jpg
http://imgbbs.ph.126.net/v03JuafHSk7IA_ULdpPabg==/1714373.jpg
http://imgbbs.ph.126.net/4TIsNdTnI8eTwkEs5h4b8A==/1714372.jpg
http://imgbbs.ph.126.net/grTXWcFUHMXaRyrWSV34Ug==/2051790.jpg
http://imgbbs.ph.126.net/v6bqC5VHQefqGB39Cdisfg==/2051791.jpg
http://imgbbs.ph.126.net/lRzcanE3cCmTR1zMdVa51g==/7775663.jpg
http://imgbbs.ph.126.net/GiInbpSMqX96Lh9cZWjTug==/2051792.jpg
http://imgbbs.ph.126.net/SO_RBBaNqzkGhNuSWwvHoA==/3720040.jpg
http://imgbbs.ph.126.net/NeSGHLOEZjQztZvVSSR5sA==/3940021.jpg
http://imgbbs.ph.126.net/oWjmrIxYm3yCdUh-b0HdSQ==/5334006.jpg
http://imgbbs.ph.126.net/KCVDkNa74r3pewILRqiPtQ==/7205373.jpg
http://imgbbs.ph.126.net/Hrg_BJi5dVRTxSB0ylO6zg==/3471704.jpg
http://imgbbs.ph.126.net/oBqkkVjN0_DEKoq6xDh-Hg==/0665046.jpg
http://imgbbs.ph.126.net/QUwpcqAaTSCNbpT4HMg9lg==/7774849.jpg
http://imgbbs.ph.126.net/RglT80TNlIYOV2WoPNN6Pg==/7673722.jpg
http://imgbbs.ph.126.net/GC_VPj0mGHhux2LmUEeF_Q==/0877772.jpg
http://imgbbs.ph.126.net/zdfT7q882bkVek6Gbqca9A==/6486081.jpg
http://imgbbs.ph.126.net/86sjJmbzAhko4VvgMsFjdw==/6955819.jpg
http://imgbbs.ph.126.net/ZWAHO6NY5MZ24-YHWdEL6A==/8833167.jpg
http://imgbbs.ph.126.net/DJDZADcZzpMxQtAz8k-bGg==/9058188.jpg
http://imgbbs.ph.126.net/U4zmes6O35_9XXZiAbEbDg==/0800541.jpg
http://imgbbs.ph.126.net/i0xxYVlpw6D_Y1ec3wg7IA==/0877822.jpg
http://imgbbs.ph.126.net/MDWt7FwUVhEq7bbQe-7OWA==/3707210.jpg
http://imgbbs.ph.126.net/Crpn9NJ0SPxrTOabAqKB-A==/8126708.jpg
http://imgbbs.ph.126.net/a9jzWPn-fZrHxKM-aLpe4w==/5680047.jpg
http://imgbbs.ph.126.net/592rA9TjxcgZYm7ZlJgEBQ==/1827277.jpg
http://imgbbs.ph.126.net/vjYTDE87kFcsNuGhNnuyvw==/8923339.jpg
http://imgbbs.ph.126.net/WVhtRA1VNKENrM-pdz6HkQ==/1367394.jpg
http://imgbbs.ph.126.net/Vu86NgrPqUHhvTxQQDgK-A==/2051812.jpg
http://imgbbs.ph.126.net/CmnogCNNYK8DXxWc2YXD0Q==/8139791.jpg
http://imgbbs.ph.126.net/nFsh1ukv1I-tcMLujNAuXg==/1634947.jpg
http://imgbbs.ph.126.net/3vi2VxfLIJUaXWk0ef-wAw==/7669369.jpg
http://imgbbs.ph.126.net/GRcpJeN1I4ydFI2PzIxQGQ==/4837030.jpg
http://imgbbs.ph.126.net/7XHzvWy58br_jaLhaP0ChA==/6147908.jpg
http://imgbbs.ph.126.net/O_BZTk4wHeVbIFfA52U8SQ==/6036013.jpg
http://imgbbs.ph.126.net/1FwztstGBLObviOm8Pqg5A==/7175508.jpg
http://imgbbs.ph.126.net/3DhCsk4L2z_A7lu-F2FOzQ==/0695934.jpg
http://imgbbs.ph.126.net/CQdzVCi6ji9a7XWlc5UoCg==/2532782.jpg
http://imgbbs.ph.126.net/lvL1atBuDsF7KpXIc2ybBQ==/3019447.jpg
http://imgbbs.ph.126.net/dcZ4DYL_01wawqn8CCUvtg==/6843093.jpg
http://imgbbs.ph.126.net/TCGvSCoAPiWUQFyB-N0iKA==/4414910.jpg
http://imgbbs.ph.126.net/qaFZ3B3YVOEWEI63z8Xntw==/9266548.jpg
http://imgbbs.ph.126.net/GMop2O-u3S_TCodgiz8ZXg==/7911070.jpg
http://imgbbs.ph.126.net/BxRevnc6_wULitckhHqkug==/7416178.jpg
http://imgbbs.ph.126.net/FMJzXyEbB2fPqrDBB3eGBw==/5328180.jpg
http://imgbbs.ph.126.net/6i_ylzoEGUq4t7dmwIGDPw==/5328182.jpg
http://imgbbs.ph.126.net/ugIT0F6mhvJTayr2J3tW8Q==/5328181.jpg
http://imgbbs.ph.126.net/1a_Ro0GAFXI13jQ7E8kUCQ==/0086719.jpg
http://imgbbs.ph.126.net/moUyExvtPn38We8kaUXtJQ==/0671717.jpg
http://imgbbs.ph.126.net/AlmCOCzVCXvGC1H26sVjVQ==/2331786.jpg
http://imgbbs.ph.126.net/YsvukLFts8B7k7TCa27bVg==/3454767.jpg
http://imgbbs.ph.126.net/t0qcqXo1_MMXGyDEEw4KlQ==/8126776.jpg
http://imgbbs.ph.126.net/rJiJIKzE_5eEnykWU2bFdg==/8126777.jpg
http://imgbbs.ph.126.net/ie9IZ9_idcoy2kMgi5Fytw==/8126779.jpg
http://imgbbs.ph.126.net/o9D9t5Y6BL6fPLaoipIuQQ==/8126778.jpg
http://imgbbs.ph.126.net/UnjBZpAQL9DwpjMqPZEYWw==/2767582.jpg
http://imgbbs.ph.126.net/WzVhnhxopZHfvD5rgoqR9g==/2767585.jpg
http://imgbbs.ph.126.net/l1Fi9tMpg7cJLwZhcjT6UQ==/2767588.jpg
http://imgbbs.ph.126.net/jGGUa2Sdx21hPF0iskAcsQ==/2767587.jpg
http://imgbbs.ph.126.net/yQjJXzyLiltTFVLkqXIYrQ==/0936755.jpg
http://imgbbs.ph.126.net/-z-SDn3Y4Vxy59-vK7KAqg==/8802211.jpg
http://imgbbs.ph.126.net/kUOYTS0wGIU7T35O-6RvCg==/4657208.jpg
http://imgbbs.ph.126.net/r2AbDLV_HR9GfA2aTXa-_Q==/0007272.jpg
http://imgbbs.ph.126.net/MPIHX7MOePGt_ji2ndlLrQ==/3309421.jpg
http://imgbbs.ph.126.net/4vY_q1Vl-zi3Xh_Pfshubg==/3485558.jpg
http://imgbbs.ph.126.net/w8OXUcpcCUDNLeV4osVv7Q==/3309422.jpg
http://imgbbs.ph.126.net/OP1FIAUG9aV5P1i_5hCGRw==/0894303.jpg
http://imgbbs.ph.126.net/sOO-SKf-9tJKxjJX71Aujg==/1030615.jpg
http://imgbbs.ph.126.net/FU5FuqeQkkA_cxwQykjOcQ==/2279132.jpg
http://imgbbs.ph.126.net/ZfLLR1o5DNIEY3nwWQyrNA==/1945653.jpg
http://imgbbs.ph.126.net/ADfn07r_bq5stUqS1LeGBg==/4401527.jpg
http://imgbbs.ph.126.net/9qd4QrUgQNTmIlkNN9OWbA==/5350803.jpg
http://imgbbs.ph.126.net/zhqlmmx8jJMeTx61vnptNg==/4419864.jpg
http://imgbbs.ph.126.net/Z8454vGCxRY5QzxuyRFAtg==/7454391.jpg
http://imgbbs.ph.126.net/1VX6WODI4zM2UdPQk7IqFA==/3707290.jpg
http://imgbbs.ph.126.net/RHyxW3OXmehOx3PV9teBmg==/5335067.jpg
http://imgbbs.ph.126.net/WeSp9NK8Y4J-uKYVo1N1wg==/6831261.jpg
http://imgbbs.ph.126.net/-ZyATihG9G2KmXIoWC9ydA==/6283861.jpg
http://imgbbs.ph.126.net/Gqf2ThFKs9jE1l54Y1IFxw==/9739766.jpg
http://imgbbs.ph.126.net/TQxSV_ZjG4NpUL4j3fEgBg==/5568527.jpg
http://imgbbs.ph.126.net/9NGM7lmQajtjSgylyR_2_A==/8704310.jpg
http://imgbbs.ph.126.net/rG3CFxCdyqjhwmrT-XhPWA==/1624495.jpg
http://imgbbs.ph.126.net/a3UnskCzVSguooKVuF2kww==/3359418.jpg
http://imgbbs.ph.126.net/COX8GIWpChpPZxWo7sbVJw==/9739826.jpg
http://imgbbs.ph.126.net/5ZSWO69AaOOeQ_Ezkmho4Q==/2311443.jpg
http://imgbbs.ph.126.net/wlaAb1QzVM01JXA3NMzpfg==/2970245.jpg
http://imgbbs.ph.126.net/ZYTX6a8cZ_TBC0QDSSynIA==/6710770.jpg
http://imgbbs.ph.126.net/XYPsY_bWKovxLiraAPUfNw==/5314521.jpg
http://imgbbs.ph.126.net/lhOfmzyZ8CDZrcQ-CikZsg==/7855662.jpg
http://imgbbs.ph.126.net/AWU2tUUhsJd_oh-6Y6SHzQ==/8104517.jpg
http://imgbbs.ph.126.net/MopEr5qJGAG_8D83Qx15Aw==/4273989.jpg
http://imgbbs.ph.126.net/FVHeD4--Z-NTD4i2nBrbGg==/9301777.jpg
http://imgbbs.ph.126.net/vpezLSRpJywfxeR88RET1g==/9301783.jpg
http://imgbbs.ph.126.net/zLgTjA6RBmVcZizghENX6A==/9301786.jpg
http://imgbbs.ph.126.net/K_wtnFpfRb5GZi7Ercbo1w==/9301785.jpg
http://imgbbs.ph.126.net/r3YWBst1ZrpLq_Q_4cW9rw==/3221522.jpg
http://imgbbs.ph.126.net/KFFUuecFikjrj_0OLTY4Ng==/0890415.jpg
http://imgbbs.ph.126.net/zTMHPBI8_u5KSJkZiyzvqQ==/1631090.jpg
http://imgbbs.ph.126.net/bT2zW935NAGGXBX9uhkOTQ==/1844241.jpg
http://imgbbs.ph.126.net/nokXPlxpxfkm3KJbWvD4wA==/5108089.jpg
http://imgbbs.ph.126.net/QUEjF3L3SQ_NcBjpMoqRow==/1264836.jpg
http://imgbbs.ph.126.net/hvoYHm1V7PPFgDtqcnc83g==/1635177.jpg
http://imgbbs.ph.126.net/A4vf_58Mt0kVIA9kD17M1w==/6243388.jpg
http://imgbbs.ph.126.net/ZoxsFI431HZhy3vDY0_r_A==/0217573.jpg
http://imgbbs.ph.126.net/7aq9-YJ4Z2aEgm5MoQdMYw==/4054344.jpg
http://imgbbs.ph.126.net/saq5tIJ_4zzcFvecqFSVsA==/5914049.jpg
http://imgbbs.ph.126.net/JGPUzfkO-yJyOHdQWHFgGA==/4414044.jpg
http://imgbbs.ph.126.net/86Mjd7SxlNzoU3Uq2nvF6g==/7221161.jpg
http://imgbbs.ph.126.net/jgJeF-9aef8QDfKKydpf1A==/9715773.jpg
http://imgbbs.ph.126.net/uHm3jhRwyVpBWyQ639GHLg==/3432435.jpg
http://imgbbs.ph.126.net/HjRL71G3pQJTO7h8KCpwuQ==/8460578.jpg
http://imgbbs.ph.126.net/CaI2N2suXEez3PT0TaiBXw==/7638937.jpg
http://imgbbs.ph.126.net/lkXlO6WvFjTGM1c4imkwhA==/0005884.jpg
http://imgbbs.ph.126.net/Yqht9eJbGlXPaFJkdJfR9Q==/0671056.jpg
http://imgbbs.ph.126.net/_t4qiVWevVS6-zDYOxLl0A==/4520402.jpg
http://imgbbs.ph.126.net/VvqQs5kI-QH0_U6uvXtFPQ==/3818072.jpg
http://imgbbs.ph.126.net/PW9wXhv48qSqrLb3dqqm0Q==/5809473.jpg
http://imgbbs.ph.126.net/42h0tXhD4vTYGtVCMIuWBQ==/2773840.jpg
http://imgbbs.ph.126.net/90njt6OY4snMlSOn_gatXg==/6514418.jpg
http://imgbbs.ph.126.net/q7P9x-mzjO_U_nvboQYxag==/7775956.jpg
http://imgbbs.ph.126.net/t0iFbccy4soToW1mwfpJ7A==/9512169.jpg
http://imgbbs.ph.126.net/DBTaB-pY-3ExZtU2gX9oNw==/7309925.jpg
http://imgbbs.ph.126.net/xbTpChUS9BIxRqg2JMVdsw==/5356046.jpg
http://imgbbs.ph.126.net/UOq8j4EAa7XlPk6HTwl2cw==/2321950.jpg
http://imgbbs.ph.126.net/gqC8BIWHrfvYuMzrimxdpQ==/2321960.jpg
http://imgbbs.ph.126.net/UXcmHlYfzC8w4q05eHtW4Q==/4422439.jpg
http://imgbbs.ph.126.net/0oP2xTCbK89zotDelpWgzQ==/2321962.jpg
http://imgbbs.ph.126.net/cXkhF0ENnWNkkcnoHReyTg==/1720749.jpg
http://imgbbs.ph.126.net/VqZKT7GPwtHfyKaisKLJTw==/1720752.jpg
http://imgbbs.ph.126.net/VtRJ2jp7fFqOzkmoFCtMbQ==/6248809.jpg
http://imgbbs.ph.126.net/vJdaEXwJPFpAPsNBc_WQjg==/1720755.jpg
http://imgbbs.ph.126.net/dsBEiMCTF4H8m0ZFN2ScrQ==/9058600.jpg
http://imgbbs.ph.126.net/rMbj5ToAqw6iddAHXJOIcQ==/8234715.jpg
http://imgbbs.ph.126.net/Q3Dwj0xOBKY78Ws3vnxkXA==/8234716.jpg
http://imgbbs.ph.126.net/Msb_k82Bl5Tb7LL-CWDfwA==/4401771.jpg
http://imgbbs.ph.126.net/_wMGCLXxUKfdE8X8D1hxAQ==/5585869.jpg
http://imgbbs.ph.126.net/VaPIh6XCxHtLBfBI4gCe1g==/4366987.jpg
http://imgbbs.ph.126.net/Bg4UYEgfu42mc65sPMVwgg==/7649922.jpg
http://imgbbs.ph.126.net/QOWM8cbYFF-x2AJOYJulJg==/6705361.jpg
http://imgbbs.ph.126.net/LehRh2n3IBimNU_1VReOoA==/2563719.jpg
http://imgbbs.ph.126.net/HWDoL8hH6pCl3c36gORdqw==/2298972.jpg
http://imgbbs.ph.126.net/ZSMuS4seOlK5PDk0UIe_Gw==/4191484.jpg
http://imgbbs.ph.126.net/7FenuKoKwv3xG8QfzFY_0Q==/1140086.jpg
http://imgbbs.ph.126.net/Le_HPhMnrs5Od7pxQfHTkw==/8824273.jpg
http://imgbbs.ph.126.net/S4Mul_yokmDJ1KCNk5tOew==/8937836.jpg
http://imgbbs.ph.126.net/ct2r5e5q_NfHEHkWEgWspw==/3019805.jpg
http://imgbbs.ph.126.net/p2_pHgTG2LhK3jSY4AvTEg==/7921442.jpg
http://imgbbs.ph.126.net/GtmfUw6qlXrwsfQVh6wGug==/1624718.jpg
http://imgbbs.ph.126.net/pIqwYcM-xfiQBcYQImgcDg==/3716351.jpg
http://imgbbs.ph.126.net/x8GOvIOOX88iXilqyv3roA==/8376235.jpg
http://imgbbs.ph.126.net/gQoXD8Apaaye7tUk2ZOCwQ==/2548782.jpg
http://imgbbs.ph.126.net/J-rFAlgJyVBtGuVSf5gE2A==/3221700.jpg
http://imgbbs.ph.126.net/Kbf9jwrlbUoVAMX05DuzhQ==/6736476.jpg
http://imgbbs.ph.126.net/pNFttMKwYv1QsQj1Jxti5w==/6736478.jpg
http://imgbbs.ph.126.net/TVXw_HA8PrD0n_LO03IPkQ==/6736477.jpg
http://imgbbs.ph.126.net/jUZSbf_w5rIOgtYSPi4njA==/7767127.jpg
http://imgbbs.ph.126.net/I7o1P4ux21ppTWrlBK6e9w==/7854843.jpg
http://imgbbs.ph.126.net/sCI7u-xW85APGNKuEkjfyA==/4844221.jpg
http://imgbbs.ph.126.net/3q0-Q-tTiL2rua53DF3FMQ==/3807001.jpg
相关图集推荐
下次自动登录
每30秒自动保存一次内容
下次自动登录