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Distinguished lecture: Prof Hermann Kopetz, Vienna University of Technology

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Mar 08

Date and time: 8 March 2022, 15:00-16:00 CET
Speaker: Prof Hermann Kopetz, Vienna University of Technology
Title: A Data, Information and Time model for Distributed real-time computer systems

Where: Digital Futures hub, Osquars Backe 5, floor 2 at KTH main campus

Maximum 50 participants are onsite at the Digital Futures hub. First-come, first-served basis.
For onsite participation – please register here:

If you are unable to participate on-site you are welcome to join us via Zoom:

Location: Zoom
Meeting ID: 695 6088 7455
Password: 755440

Moderator: Martin Tö
Administrator: Hao Hu,

This event is held jointly with TECoSA

Download the presentation here: 22.03.08_The DIT Model_Kopetz

Watch the recorded presentation:


Abstract: This seminar aims to present a model that clarifies the semantics behind the terms data, information and their relations to the passage of real-time. According to the DIT model, a data item is a symbol the signifier of which appears as a pattern (e.g. visual, sound, gesture, or any bit pattern) in physical space. The signifier of the symbol is generated by a human or a machine in the current contextual situation and is linked to a concept in the human mind or a set of operations of a machine as its signified. An information item delivers the sense or the idea that a human mind extracts out of a given natural language proposition that is composed of meaningful data items. Since the given tangible, intangible and temporal context are part of the explanation of a data item, a change of context can have an effect on the meaning of data and the sense of a proposition. The DIT model provides a framework to show how the flow of time can change the truth-value of a proposition. Prof Kopetz compares the notions of data, information, and time in differing contexts: in human communication, in the operation of a computer system and in a biological system. In the final section, he will present a simple example to demonstrate how the lessons learned from the DIT model can help to reduce the complexity and improve the design of a real-time computer system.

Bio: Hermann Kopetz is a professor emeritus at Vienna University of Technology. He was named an IEEE Fellow in 1994 for contributions to fault-tolerant, real-time systems. He is a cofounder of the company TTTech.

Link to the profile of Hermann Kopetz