CPU为CSP8051F020，有两个串口和一个SPI口。
一个串口通过数传电台和中控室计算机通信 另一个串口和PLC的MODBUS口通信。
SPI口控制数码管的显示。
已经在工程上应用。-CPU for CSP8051F020, two serial and one SPI mouth. A serial data transfer through the radio and the computer control room of another serial communications and MODBUS PLC Communication. I SPI digital control of the show. In engineering applications.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001318s ]
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:0.071036s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001000s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001076s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.000989s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003442s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000954s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003639s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014447s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001382s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 161935 [ RunTime:0.014390s ]
