A device which reads data from punched cards and sends them to the computer. 从穿孔卡片上读出数据送入计算机的一种装置。
Constructing a program so that the time required to obtain both data and instruc tions out of memory is at a minimum. 使编写的程序从存储器读出数据和指令所花的时间最少的一种构造程序的方法。