It might be C. Proof reading the document
Install Visual Studio 2017 and install the C++ pack and you have access to the templates (function and class)
* Main Electron a component- vacuum tube.
* Main memory- Magnetic drums and magnetic tapes.
* Programming language- Machine language.
* Power- Consume a lot of electricity and generate a lot of heat.
* were expensive to operate
Answer: I do belive is says Vans
Explanation:
