# 4.1 全面兼容EVM

DxChain 3.0能够全面兼容EVM以太坊虚拟机（Eetheruem Virtual Machine，EVM），支持编译和执行智能合约，并支持各版本的Solidity语言。

以太坊虚拟机是一个图灵完备的状态机，是用于执行交易或者合约代码的引擎。由于合约像众多的应用程序一样可以完成比较复杂的逻辑功能，而EVM支持循环操作指令，任何复杂设想的程序都得以顺利运行。EVM为合约提供了一个安全的运行环境，每个合约都有其独立的运行时堆栈，EVM栈最大支持1024个元素，每个元素为256bit。


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