Our day started with a presentation about the roles of read-only memory (ROM) and Random Access Memory (RAM), of expansion cards, storage units, internal cables and ports, input and output devices and told us about safety rules for working in a PC environment and for handling dangerous materials, equipment and consumables usage rules in order to ensure environment protection, safety measures for hardware and software components. Later on, we got to disassembly and reassembly a PC and identify its parts which we found very interesting.