First, PC operating systems were designed to free computer users from the tyranny of centrally controlled mainframes.

首先，PC操作系统被设计为将用户从主机集中控制的专治统治中解放出来。

youdao

The system is made up of five sub-systems of micro - computer measuration, which is controlled with mainframe for management.

该系统由五个微电脑检测系统组成，并用一台系统实施总控管理。

youdao

Analysis and experiment results show that the properties of this digital trigger are very good and digital trigger can be used in various thyristor systems controlled by computer.

分析和仿真实验结果表明：该数字触发器通用性能好，可用于计算机控制的各种晶闸管系统。

youdao

These products are used in telecommunications networks, computer-controlled systems, security systems, emergency lighting, electric utilities and switchgear, medical equipment, rail signaling, renewable energy, and military and aviation equipment.

FORBES: Charge Up Your Portfolio With EnerSys

While the research could help inform practices in older NHS buildings, many newer UK hospital buildings feature no opening windows and complex computer-controlled ventilation systems.

BBC: Closing hospital windows 'increases infection risk'

After experience with early hand- held calculators at Rockwell International, with the first consumer video tape recorder at Cartridge Television, and with the original computer controlled video editing systems at CMX Systems, a CBS-Memorex joint venture, he began his own management consulting business in 1974.

FORBES: A Silent Voice: James Porter, Dean of Storage Analysts Dies