Here are the main components of a computer ¹ ² ³ ⁴:

- *Input Devices*: These allow users to enter information and commands into a computer. Examples include keyboards, mice, touchscreens, microphones and scanners.

- *Output Devices*: These transport information to one or more people. Examples include computer monitors, printers, projectors and speakers.

- *Processing Unit*: This is the brain of your computer. It contains the processor (CPU), the memory unit (RAM) and the motherboard, which is the main circuit board that connects all components.

- *Storage*: This includes the hard drive, which is home to the operating system and all saved files, and the read-only memory (ROM), which contains software that won't be modified.

- *Communications*: This relies on internal hardware components such as Bluetooth and Wi-Fi adapters, as well as USB ports and HDMI for sending and receiving data from the computer.

The main components of a computer include the CPU, memory (RAM), storage devices (such as hard drives or SSDs), motherboard, power supply, input devices (like keyboard and mouse), and output devices (such as monitor and printer).