... Guide26Chapter 4 Data Acquisition ConceptsMajor System ComponentsA typical data acquisition system consists of a host computer, operating softwareprogram, data acquisition hardware, field wiring and control ... of a PC based data acquisition system is shown in Figure 4.1.Figure 4.1 A Typical Data Acquisition and Control SystemAliasing and the Sampling TheoremThe main objective of data acquisition ... 999.Process Control, Automation, Instrumentation and SCADA15The IDC Engineers Pocket Guide14Chapter 2SCADA and Telemetry Fundamentals Supervisory Control and Data Acquisition (SCADA) systems...