current signal they may be multiplied together and the result may be stored or the individual signal values may be stored example data received from the signal monitor 115 and stored in the memory 117 are shown in fig4 columns 201 and 203 in fig4 are 32 bit data hexadecimal that the signal monitor 115 writes in the memory 117 the entries in column 201 are 8 bit event codes the entries in column 203 are 24 bit power data or time data column 205 is the same as column 201 and indicates that the contents of column 201 are event codes in column 207 indication is made as to whether the data is timer value or power data in column 209 the meanings of the event codes are shown and in column 211 remarks are entered the event codes describe the types of measurement signals in this case event code 10 means the start of timer i e the initiation of a measurement code 11 represents a timer wrap and code 14 represents the termination of the measurement data for an event code having a first numeral of 1 is a timer value at the current time event code 21 indicates that the stpclk has become active and code 20 indicates that the stpclk has become inactive event code 2 c indicates that the cpu_stp has become active and code 28 indicates that the cpu_stp has become inactive data for an event code having a first numeral of 2 is a timer value at the current time event code 70 designates power data of a computer component no 0 code 71 designates power data of a computer component no 1 and code 72 designates power.