Tipu MACD EA is based MACD indicator that created by Gerald Appel in 1979.  MACD is a Momentum Oscillator, calculated by subtracting the two price moving averages calculated on the price. It is one of the simplest indicators that provides best of both trend and momentum. 

The standard version of MACD is included in MetaTrader4 platform.  https://www.mql5.com/en/code/7774   

There are also variations of the MACD indicator.  One of them was created by Kaleem Haider https://www.mql5.com/en/code/18270

Tipu MACD EA is a simple EA created to automate buy/sell orders based on the MACD indicator.  This EA is for educational purposes only and should be used at user own risk to trade.