These instructions could be combined to create useful programs for the EDVAC to run.

这些指令可合并创建有用的程序的EDVAC运行。

Tubecomputers like EDVAC tended to average eight hours between failures, whereas relay computers like the (slower, but earlier) Harvard Mark Ifailed very rarely (Weik 1961:238).

像管计算机EDVAC往往平均故障间隔8个小时，而中继电脑一样(速度较慢，但更早)哈佛大学马克我失败很少(Weik 1961： 238)。