An information collecting apparatus and collecting/analyzing system, including an input unit for sampling digital signals input from each part of an object to be measured, a transfer unit for transferring the digital signals via a communication interface to a host computer in substantially real time, and a control unit for controlling the input unit and transfer unit; and a host computer, including a signal processing unit for processing digital signals transferred from the information collecting apparatus, a storage device for storing processed digital signals in substantially real time, display units for displaying various types of images based on digital signals stored in the storage device, and a control unit for controlling the signal processing unit, storage device and display units.