Used definitions

To understand the operating principles of computer systems we use basic terms:

• 👤 User — a person or a group of people who interact with a computer to solve their tasks.
• 💻 Computer — an electronic device (or a related system of several devices) controlled by programs. Depending on the installed programs, its functions change so that it can be a useful tool for the user.
• 📊 Digital data — any information familiar to us (texts, photographs, music, or video) represented in a “language” the computer understands (binary code). Thanks to this representation, the computer can store, process, and transmit it.
• ⚙️ Program — a digital tool, a prepared set of commands for the computer. It is used to work with digital data in the way the user needs.
• 🛠️ Hardware components (“hardware”) — all physical parts (electronics, chips, boards) from which the computer is assembled.