The exhibition "History of Computers. It counts!" presents the development of techniques related to machine data processing. This applies not only to numbers, but to all types of information that can be subjected to analytical processes that take place without the ongoing participation of the human mind.

The themes of the exhibition familiarise visitors with the evolution of technical solutions. It covers issues going back to the beginnings of instruments supporting basic computing, and culminating in contemporary global solutions that are integral to the functioning of 21st century societies. It addresses computerisation, but takes into account the economic and social changes derived from the mass use of digital machines. The most important practical issue emphasised in the exhibition is the incredible progress of the physical basis of computing techniques. It is linked to the transition from mechanical to electronic designs, and then within electronics, from vacuum tubes to semiconductor transistors and integrated circuits. A derivative of this is the huge progress in miniaturisation of devices and the exponential increase in computing performance. It is interesting that the world of calculating machines today is dominated by the binary-based approach. Analogue solutions have virtually disappeared altogether, although the early days of the computerisation era gave each computing method an equal chance to take off.

Counting machine interfaces are a separate issue. Hundreds of years ago, these were hand-laid pebbles or beads strung on wires in sorobans. In the electronic computer age, screen-based graphical interfaces emerged. The latest interfaces aim to integrate directly with the human nervous system.

Nowadays, although it may seem like an excess of superfluousness, most of the devices around us are equipped with smaller or larger calculating machines (microprocessor controllers, microcomputers, office computers, scientific supercomputers, etc.) and have embedded software.

The role of the exhibition "History of Computers. It counts!" is to show the technical changes that have taken place over the centuries, leading from the abacus to the microcomputer carried in the pocket, making available almost all of the world's knowledge and achievements through the resources of the World Wide Web.

A parallel aim of the exhibition is to showcase Polish computer and information technology, which, despite its partial dependence on the economies of other countries, has had its important achievements.

The selection of exhibits, scenography and content are varied to cater for different age groups:
- children aged 5-8: the exhibition provides entertainment and conveys simple, basic messages related to the history of computing and computerisation.
- children and adolescents aged 9-16: the exhibition for this age group provides the impetus to explore technical and historical issues in greater depth, encouraging them to reflect on their choice of career path or to discover their own passions.
- adolescents and young adults aged 17-30: the exhibition provides a meeting space and an attractive way to spend leisure time.
- adults aged 30 and over: for those who are passionate about the history of technology, the exhibition enables them to deepen their knowledge, and for parents or grandparents with their children, it creates an educative and educational sphere in which the carer becomes the first guide to the world of technology.

The museum collections on display largely focus on Polish achievements and figures. These are inventors, constructors and scientists, among whom we find logician Jan Łukasiewicz, inventor Chaim Słonimski, constructor Jacek Karpiński, professor Leon Łukasiewicz and many others. Polish computer science is represented by unique constructions, existing in only one copy, preserved in excellent condition. These include the AKAT-1 analyser, the ARR differential equations analyser, the experimental ZAM-21 and the ODRA 1002 prototype computer. There are, of course, many more such unique testimonies of technical culture, and the way in which they are displayed also makes it possible to learn the secrets of their construction.