World Computer (Virtual Machine)
The world computer is a single virtual machine implemented by a worldwide network of computers. Programs on the world computer are referred to as :ref:`smart contracts <ch_smart_contracts>`. Because the world computer is Turing complete, smart contract can be arbitrarily complex. Users interact with the world computer through :ref:`clients <ch_clients>` using :ref:`accounts <ch_accounts>`. In fact, all actions on the world computer are initiated by :ref:`transactions <ch_trans>` sent from users.
.. toctree:: accounts smart_contracts clients