Answer:Thank you very much! A user names SShalomeea has been hacking today. Anyone with that photo is a spammer.
Answer:
The control unit of the CPU contains circuitry that uses electrical signals to direct the entire computer system to carry out stored program instructions.
Explanation: The control unit does not execute program instructions rather, it directs other parts of the system to do so.
299,792,458 metres per second
Command prompt is the answer and on Apple devices it is called Terminal.