A/D转换
1．熟悉1路及多路A/D转换。
2．为温度、压力、流量等模拟量的转换提供参考。-A/D converter 1. Familiar with one way and multi-channel A/D conversion. 2. For temperature, pressure, flow, such as analog conversion to provide reference.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002076s ]
SELECT `a`.`aid`,`a`.`title`,`a`.`create_time`,`m`.`username` FROM `jrk_downrecords` `a` INNER JOIN `jrk_member` `m` ON `a`.`uid`=`m`.`id` WHERE `a`.`status` = 1 GROUP BY `a`.`aid` ORDER BY `a`.`create_time` DESC LIMIT 10 [ RunTime:0.102601s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002808s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.003045s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002268s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.005049s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002204s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.005155s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.022693s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002837s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 287405 [ RunTime:0.001165s ]
