The IBIS model is used to help get exact information in the integrity constraint design of system board level or multiple board level signals for analysis and calculation.

IBIS模型可以帮助设计者在系统板级或多板信号完整性约束的设计中获取准确的信息，以进行分析和计算。

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Unlike other serial directors, who tend to be retired or current CEOs, the African-Americans with multiple board seats tend to have experience in government and academia.

FORBES: , always gets a nod, as do Stanley O'Neal

Among multiple board sitters, a disproportionate share are African-American.

FORBES: , always gets a nod, as do Stanley O'Neal

Data come from multiple sources on board aircraft, in case one fails, and multiple computers run together on the ground to provide backup.

WSJ: How New Air-Traffic Control Systems Operate Over Oceans