在需要处理数据时，系统或资源就绪的程度。
The degree to which a system or resource is ready when needed to process data.
计算机是一种快速、精确的符号加工系统，它能接收、存储、处理数据并产生输出结果。
A computer is a fast and accurate symbol processing system. It can accept, store, process data and produce output results.
科学和技术的一个分支，专门研究在人们、地方或机器之间如何表示、传送、解释或处理数据的过程，关键的内容是在上述过程中要保持赋给既定数据的含义不变。
The branch of science and technology that is concerned with the process of representing, transferring, interpreting, or processing data among persons, places, or machines. It is essential that the meaning assigned to the data is preserved during the process.
