The document summarizes key hardware components of a computer system:
1. A monitor displays visual output and has better resolution than a television. It does not have a tuner to change channels.
2. Computer memory, also called storage, retains digital data for computing and provides information retention, which is a core computer function.
3. A central processing unit (CPU) or processor executes computer programs and has been a fundamental part of computers since the 1960s.
4. The motherboard is the main circuit board in a computer that connects the other components together, such as the CPU, memory, storage, and ports.