The parallel and redundancy are implemented by using data communication method in emergency shutdown for enhancing the reliability of the system.

急停系统采用数据通信的方式实现并行冗余，提高了系统的可靠性。

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Just to add complication, each will have a different electoral system: council elections in May will be by the traditional first-past-the-post method, European elections in June by a proportional system.

ECONOMIST: Devolution

MPs are currently debating legislation required to pave the way for a referendum on the way they are elected and whether to change the current first-past-the-post system in favour of an Alternative Vote method.

BBC: Ministers under fire over consultation on AV referendum

The public will be asked whether they want to replace the existing first-past-the-post system for electing MPs to Westminster with a method known as the alternative vote (AV).

BBC: Q&A: Alternative vote referendum