It turns out that you can do a lot with minimal hardware, such as driving 300 RGB LEDs with a three cent microcontroller. There’s some work trying to make an Open Source toolchain for these ...

Pin 20 of the microcontroller is grounded. FIGURE 3.47 Pin diagram of 8051. Figure 3.47, given, above shows the pin diagram of 8051. There are four ports in 8051 and every port has 8 pins, so in total ...