离线式LED照明简述
As environmental concerns over traditional lighting increaseand the price of LEDs decreases, high power LEDsare fast becoming a popular lig...
As environmental concerns over traditional lighting increaseand the price of LEDs decreases, high power LEDsare fast becoming a popular lig...
In August of 1992 LTC published Application Note 49, “Illumination Circuitry for Liquid Crystal Displays.” One notable aspect of this ...
This application note describes how to decode standard DTMF tones using the minimum number of external discrete components and a PIC. The two examples...
51单片机及其应用:1.1.1 电子计算机的问世及其经典结构1946年2月15日,第一台电子数字计算机问世,这标志着计算机时代的到来。(CALCULATOR)ENIAC(“埃尼阿克”)◆ENIAC是电子管计算机,时钟频率仅有100 KHz,但能在1秒钟的时间内完成5000次加法运算。...
The PCA9557 is a silicon CMOS circuit which provides parallel input/output expansion for SMBus and I2C-bus applications. The PCA9557 consists of an...