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1 引言 VAX系列计算机的控制台终端一般为硬拷贝终端,如LETTER WRITER 100。这种方式的控制台终端的优点是便于保存操作信息资料,缺点是:缺乏灵活性,不需要打印的信息也照打不误,既浪费纸张又磨损机器,速度也很慢;在操作使用过程中感觉不方便,不象屏幕显示那样一目了然,查看打出的命令时得用于将挡板拿起来;改错更不方便,它是在打印纸上反向删
1 Introduction VAX series computer console terminals are generally hard copy terminals, such as LETTER WRITER 100. The advantage of the console terminal in this way is that it is convenient for saving operational information. The disadvantages are: the lack of flexibility, the unprinted information, the waste of paper and the wear of the machine, and the slow speed of operation; In the feeling of inconvenience, not as clear as the screen display, view the command to be used to pick up the bezel; error correction more inconvenient, it is reverse printing paper