The Spread-Spectrum-Clock Generation(SSCG) technique is the latest technology to decrease electromagnetic radiation of the electronic system.

A new tool that can test the clock base frequency error of energy measuring devices and provide GPS standard time to calibrate real-time clock was introduced in this paper.

This paper introduces A/D Converter ICL7135 Series Collection in Single-chip Microcomputer Voltage Meter,interface circuit and clock frequency of AT89C51 and ICL7135.

The relations among the error of frequency measurement, measure time, reference clock frequency and the measured signal frequency, are also deduced.

Dynamic voltage scaling (DVS) technique is an effective way to reduce processor energy consumption through changing the processor’s supply voltage and clock frequency at the runtime.

Frequency-tunable all-optical clock division using semiconductor laser subjected to external optical injection;

This paper studied clock division phenomenon on SOA injection Mode-Locked Fiber Laser,and the focus of the injection repetition frequency of 5.

The high-repetition rate optical pulses clock division is investigated based on the nonlinear dynamics of optically injected Fabry-Pérot semiconductor laser.

The model between a switch under tested(SUT) and a Smartbits card is presented and used for two interconnecting switches,this paper presents that clock frequency error(CFE) between a SUT and a Smartbits card is a leading factor of forwarding delay in an ethernet switch.