时钟频率

By utilizing the cross-gain modulation effect and the period-one oscillation harmonic frequency-locked in an optically injected semiconductor laser, we can extract the wavelength conversional individual channel optical clock from the optical-time-division-multiplexing signal. In a FP-LD, we numerically simulate the extraction of 20 GHz optical clock at 1550 nm from the 2×20 Gb/s OTDM signal at 1555 nm, and experimentally obtain the -105 dBc/Hz phase noise frequency division clock of 12.36 GHz to 6.18 GHz with simultaneous wavelength conversion from 1550.24 nm to 1545.91 nm.

采用一个FP半导体激光器作为全光分路时钟提取及波长转换器，数值模拟实现了从波长为1555 nm、速率为2×20 Gb/s的光时分复用信号中提取出波长转换为1550 nm、重复频率为20 GHz的分路光时钟，实验完成了从波长为1550.24 nm、重复频率为12.36 GHz光脉冲信号中提取出相位噪声为-105 dBc/Hz的波长为1545.91 nm、重复频率6.18 GHz的分频光时钟。

Oversampling based Sigma-Delta modulation technique once had been widely used in low-speed high-resolution field, but they has excessed this limitation for high-speed device development and the strong requirements of modern wire/wireless communication.

但这种局面已经改变，一方面由于现代CMOS工艺的进步使系统工作时钟频率不断提高，另一方面受到现代通信系统巨大需求的刺激，现在Sigma-Delta模数转换器早已突破了1MHz的带宽限制，并持续往高速应用领域发展。

The method includes acquiring with the frequency meter the tested clock signal and measuring its frequency; sending the tested frequency value to the data acquisition and processing module for calculation and processing regularly; and processing the frequency data comprehensively in the data processing output module and displaying output figure and historical data.

所述的方法包括：首先，频率计采集待测时钟信号，并测试其频率值；然后，频率计定时将测试得到的待测时钟信号的频率值发送给数据采集处理模块进行计算处理；最后，数据输出处理模块对接收数据采集处理模块处理后的频率数据进行综合处理，并将获取的图形数据和历史数据显示输出。

When using the device in the daisy chain configuration, maximum clock frequency is determined by a combination of propagation delay time (tDO 80 ns), data input setup time (tSU 40 ns), SCK high time (tHI 40 ns), and SCK rise and fall times of 5 ns.

当使用菊花链配置中的设备，最大时钟频率是由一个传播延迟时间（TDO的80纳秒），数据输入建立时间（台联40纳秒）的组合，SCK的时候（硫40纳秒），和SCK上升和下降5 ns的时间。

Said processor FSB, it is necessary to mention two closely related concepts: the frequency and the frequency, CPU clock frequency is the frequency; multiplier and FSB frequency that is a multiple of the ratio.

说到处理器外频，就要提到与之密切相关的两个概念：倍频与主频，主频就是CPU的时钟频率；倍频即主频与外频之比的倍数。

According to some estimation, to May the chip r600 must master clock frequency not below 800 MHz.

根据一些估计，可能必须掌握晶片R600时钟频率不低于800兆赫。

For general applications,benchmark tests show a 10一20 percent improvement over the Pentium Classic,increasing to nearly 70 percent when multimedia-specific plications are considered.[6] Chips withclick speeds as high as 233 MHz are available.

对于一般应用来说，MMX的基准测试结果比经典奔腾改善性能10%~20％，而在特定的多媒体应用中，提高约70％，可用的芯片内部时钟频率高达233MHz。

The sampling rate is set up by DSP on-chip high speed counter ,and two 322bit high speed counter s and the counter-controlled electric circuit are constit uted by the external CPLD.

采用 DSP 锁相环技术，将外部输入时钟频率提高5倍，作为时标信号；通过 DSP 片上高速定时器完成采样速率设定功能；利用外部 CPLD 构成两个 32 位高速计数器和计数器开闭控制电路。

The WM8753L Hi-Fi DAC can operate as a master or a slave, with various master clock frequencies including 12 or 24MHz for USB devices, 13MHz or 19.2MHz for cellular systems, or standard 256fs rates like 12.288MHz and 24.576MHz.

该WM8753L Hi - Fi的发展援助委员会可以作为一个船长或一个奴隶，与各主时钟频率，包括12或24MHz的USB设备， 13MHz或19.2MHz的蜂窝系统，或标准256fs率一样12.288MHz和

Although DDR3 supposes to reduce the system power consumption with its lower supply voltage of 1.5V versus 1.8V required on common DDR2, but since it is clocking at extremely high frequency, there is a need to have proper power management system and that is how the company's proprietary DHX+(Dual-path Heat eXchange) heatsink comes into picture.

虽然DDR3内存假设，以减少系统功耗较低的电源电压为枚1.5V与1.8V的需要共同的DDR2 ，但因为它是在非常高的时钟频率，还需要有适当的电源管理系统，这是如何公司专有的DHX +散热器进入图片。

I'm strongly against the death penalty — it's an eye for an eye.

我不赞成死刑——这是以牙还牙的报复行为。

And to get you the support you need, we're enlisting all elements of our national power: our diplomacy and development, our economic might and our moral suasion, so that you and the rest of our military do not bear the burden of our security alone.

并给你们所须的支援，我们正徵召国家所有各种的力量：我们的外交及发展，我们的经济力量与道德劝说，所以你们与其他军人不须要孤独地负起国家安全的责任。