As symbolized by the initiation of digital TV broadcasting and the appearance of keywords such as "ubiquitous," more and more digital devices are entering our living environment. For this reason, anti-noise measures for electronic equipment are becoming more and more important. Of noises from digital devices mounted on electronic equipment, 90% is said to be ascribable to a timing error in the power supply to a circuit. For example, a CPU internally switches 0 and 1 at high speed. This means that a circuit at zero volts needs to reach a necessary voltage in a split second. If the power supply to the circuit does not achieve this timing, the semiconductor device cannot operate normally and generates severe noise. To prevent this noise, a decoupling capacitor or bypass function has been helpful. Use of these has become so important as to occupy 90% of the capacitor market. However, with the growing speed of digital elements, a great problem has surfaced. The operating frequency of recent CPUs is over 3 GHz and the switching timing is below three billionths of a second, and becoming shorter. A small number of capacitors are not enough to deal with this ultrahigh speed. A combination of close to 100 capacitors - from small-capacity, high-speed to large-capacity, low-speed - is needed. Under moves toward compactness and flexibility, semiconductor chips have become more integrated to reduce the numbers of parts. In inverse proportion to this, the number of capacitors in decoupling circuits continues to grow. Proadlizer® is NEC TOKIN’s unique answer to noise countermeasures.