rgb全彩LED，apa102比ws2812b好在哪儿

APA102是双线控制(SCK(时钟线),SDO(数据线)),时钟速度可达30MHZ.

WS2812是单线控制,只有一根数据线,依靠占空比来判断是0还是1.一个BIT传送时间是1.25US左右,所以每秒最大只能传送800Kbit的数据.

APA102价格比WS2812贵.但是APA102比WS2812控制方便.当然都有现成的控制器的.

仅代表个人观点，不喜勿喷，谢谢。

我试试

一、禽类产品检查法 （Poultry Products Inspection Act, PPIA）

Poultry inspection began in 1926 on a voluntary basis, and in 1957, Congress passed the Poultry Products Inspection Act (PPIA), (26) which established mandatory, continuous, daily inspection of poultry products.

http://www.thefreelibrary.com/9%2f11+and+agricultural+security-a0110812551

从上可看出，起草是在1926年，1957年国会立法。

二、蛋类产品检查法 （Egg Products Inspection Act, EQPA）

APPROVED DECEMBER 29, 1970.

http://www.fda.gov/opacom/laws/eggact.htm

执行年代 1970年12月29日

三、食品质量保护法 （Food Quality Protection Act, FQPA）

The Food Quality Protection Act (FQPA), passed by Congress in 1996, amends prior pesticide legislation to establish a more consistent, protective regulatory scheme, based on sound science. It mandates a single, health-based standard for all pesticides in all foodsprovides special protections for infants and childrenexpedites approval of safer pesticides, and creates incentives for the development and maintenance of effective crop protection tools for American farmers. It also requires periodic re-evaluation of pesticide registrations and tolerances to ensure that the scientific data supporting pesticide registrations will remain up to date in the future.

http://pmep.cce.cornell.edu/fqpa/

国会于1996年通过并执行。

公共卫生服务法 （Public Health Service Act, PHSA）

U.S. PUBLIC HEALTH SERVICE

11-JUL-2001

http://www.usphs.gov/default.aspx

美国公共卫生局（网）

2001年7月1日执行