The three functional units of a modern computer are

The three functional units of a modern computer are: input unit, processor, and output unit. The input unit is responsible for taking in information from external sources, such as a keyboard or a mouse, and converting it into a form that the computer can understand and process. This information is then passed on to the processor. The processor, also known as the central processing unit (CPU), is the "brain" of the computer. It receives input from the input unit, processes it according to the instructions it has been given, and then sends the output to the output unit. The output unit is responsible for taking the processed information from the processor and presenting it in a form that is understandable to the user. This could be through a monitor display, a printer, or some other type of output device. Together, these three functional units work together to form the basic structure of a modern computer. The input unit brings in information, the processor processes it, and the output unit presents the processed information to the user in a meaningful way.