1. At present, the programmed trading system is mainly realized by computer programs. In fact, it is to describe the decision-making process of traders with computer language, and then the computer gives trading suggestions or directly sends trading instructions to the trading system of futures companies to complete a transaction. For example, when we think about whether to buy or sell a certain variety in natural language: "If the price of soybean 090 1 falls below 3,000 yuan, we will sell one-third when we open the warehouse ..." When we describe it in computer language, it may be: "If A090 1