Novel approach in measurement instrument based on computer

Abstract Most applications in engineering use a data acquisition device hooked up to personal computer for processing. Finding less costly, easily accessible and reliable devices will make (PC) based systems difficult. A soundcard may be used as such it is standard almost every PC. It can also process any voltage signal within its limits. This paper proposes way enable the PC an oscilloscope. acquired via LINE IN port. The maximum minimum input amplitude requirements are established +1 V –1 respectively. Based on these findings, hardware circuitry designed clip high signals range of ±1 while allowing low go through unclipped. MATLAB then employed acquire, display signal. final output from compared with original determine accuracy Analysis results obtained shows that oscilloscope enables level accuracy. design yields cost at fraction iPod providing elegant user interface. makes suitable college students, basement hackers even professional engineers.