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Definition of "clock skew" |
The operation of most digital circuit systems, such as computer systems, is synchronized by a "clock" that dictates the sequence and pacing of the devices on the circuit. Ideally, the input to each element has reached its final value before the next clock movement occurs so that the behavior of the whole circuit can be predicted exactly. The maximum speed at which a system can run must account for the variance that occurs between the various elements of a circuit due to differences in physical composition, temperature, and path length. / the phenomenon where different parts of the circuit receive the same state of clock signal at different times because it travels in wires with different lengths. This skew of the signals causes a processing element to generate an erroneous output. Distribution of the clock by means of optical fibers, waveguides, a lens, or a hologram, eliminates clock skew. |
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