Hardware and Software:
Hardware refers to the physical components of a computer system, such as the motherboard, CPU, memory, storage devices, and input/output devices. Software, on the other hand, refers to the programs and applications that run on the hardware. Both hardware and software are essential components of a computer system, with hardware providing the platform for software to operate.

Input and Output:
Input devices are used to enter data and instructions into a computer system, such as keyboards, mice, and scanners. Output devices, on the other hand, display or provide the results of processing, such as monitors, printers, and speakers. Input and output devices are crucial for interacting with and receiving information from a computer system.

CPU and Memory:
The central processing unit (CPU) is often referred to as the "brain" of the computer, as it carries out instructions and performs calculations. Memory, also known as RAM (Random Access Memory), stores data and instructions that the CPU needs to access quickly. The CPU and memory work together to process and execute tasks efficiently.

Monitor and Keyboard:
The monitor displays visual output from the computer, allowing users to see information, images, and videos. The keyboard is an input device that allows users to enter text, commands, and other data into the computer system. Both the monitor and keyboard are essential components for interacting with the computer and accessing information.