基于真空管技术，三极管提供了使用当前电流打开或关闭一个电路能力。
Built on vacuum tube technology, the triode provided the ability to turn an electrical circuit on or off using current flow.
对于计算机来说，繁多的数据是很难被处理的。但是，世界上第一台基于真空管技术的巨型计算机诞生于1946年。
The comparable dates for the computer are harder to tie down, but the first big computer, based on vacuum valves, was built in 1946.
Sandia公司的Simmons博士注意到，传统灯泡是最后一批还在使用真空管的装置，这项陈旧的技术在无线电和大多数电视上早就已经被取代了。
Conventional light bulbs are among the last devices that use vacuum tubes, an old technology that has long been replaced in radios and most televisions, notes Sandia's Dr Simmons.
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