The von Neumann model

The von Neumann model has three main parts: the RAM, the CPU and the I/O, which is the way you introduce information or receive it from the computer. 

In the von Neumann model, the inputs entered are carried to its destination by buses, which can be data , so they carry data; access, so their information is the location of that data; or control, which carry orders. 

When an input such as selecting a video to be played is entered, several buses are sent. First, from the HD, a data and an access bus are sent so that the RAM downloads the video, and a control bus is sent from the mouse to the CPU telling it to open the video. 

After that the RAM sends a control bus to the CPU, telling it to send the following buses, and a data bus and an access bus, sending the video and its location. 

After that, the CPU sends the last set of buses, in which it tells the media player to play the video, and sends it, as well as the location.