现代科学技术的飞速发展,把人类带入了一个数字化生存的空间。人们相互之间的交流呈现出空前的数字化特征:住宅门牌是一组数、电话号码是一组数、身份证件是一组数、银行帐号是一组数、福利彩票是一组数……还有数字相机、数字彩电、数字通讯等等。只要在这个世界上存 The rapid development of modern science and technology has brought mankind into a digital living space. People communicate with each other with unprecedented digital characteristics: a house number is a group number, a telephone number is a group number, an ID document is a group number, a bank account number is a group number and a welfare lottery number is a group number. There are digital cameras, digital color TV, digital communications and more. Just save in this world