A frequency demodulator comprises a frequency discriminator configured to generate a frequency modulation signal from frequency modulated signal, circuitry for generating a phase modulation signal from the frequency modulation signal, and a click reduction signal processing circuit operable to remove noise enhancements from the phase modulation signal caused by clicks. A real-time dialog containing data corresponding to each cookie request associated with the web page being viewed may be generated while the web page is displayed. A magnetic resonance imaging system is arranged to generate a series of output signals over a period of time representative of temperature in the part as the temperature of the part changes during that time. For each region, there may be one or more lead categories therein. The asymmetry in the design parameters of different gates can take the form of varying the gate length, the gate width and the threshold voltage so as to vary the conductance of different gates to suit their individual role within the memory cell 36 which is operating in the asymmetric manner provided by the separate word line signals driving read operations and write operations. The control apparatus is adapted to transmit the execution of radiation time intervals between radiations of electromagnetic wave to each of the wireless tag readerswriters and each of the wireless tag readerswriters is adapted to radiate an electromagnetic wave according to the received execution of radiation time intervals.