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计算机的普及和发展为信息存储 提供了硬件环境。信息产业的兴起和信息的开发利用能产生巨 大社会和经济效益也毋庸赘述。但是,一个不容忽视的问题摆在人们面前,这 就是信息输入计算机的“瓶颈”。据估计,常见的键盘输入(包括输入时间、机 时和人力)占去数据处理总费用的 40～50％。正如一位计算机系统资深人士费 尔德曼(LAWRENCE FIELDEMAN) 指出:“现在的数据因其人员数目的增 加、延长的响应时间和错误输入的后
The popularization and development of computers provide a hardware environment for information storage. The rise of the information industry and the development and utilization of information can generate enormous social and economic benefits. However, a problem that can not be ignored lies in front of people. This is the “bottleneck” of entering information into computers. It is estimated that common keyboard inputs (including input time, hours and labor) account for 40-50% of the total data processing costs. As LAWRENCE FIELDEMAN, a computer systems veteran, notes: "Today’s data is driven by increased staffing, extended response times and erroneous input