using System;

​

    public class Program

    {

        private static Computer _computer;

        public static void Main()

        {

            _computer = new Computer();

            _computer.Test(new MotherBoard(), new Cpu(), new Ram(), new HardDrive(), new PowerSupply());

        }

    }

​

    public class Computer

    {

        private IMotherBoard _mb;

        private ICpu _cpu;

        private IRam _ram;

        private IHardDrive _hd;

        private IPowerSupply _ps;

        public Computer()

        {

​

        }

​

        public void Test(IMotherBoard mb, ICpu cpu, IRam ram, IHardDrive hd, IPowerSupply ps)

        {

            this._mb = mb; 

            this._cpu = cpu;

            this._ram = ram;

            this._hd = hd;

            this._ps = ps;

            Console.WriteLine(this._mb.Motherboarding());

            Console.WriteLine(this._cpu.Calculate());

            Console.WriteLine(this._ram.StoringData());

            Console.WriteLine(this._hd.WritingData());

            Console.WriteLine(this._ps.ProducePower());

        }

    }

    public interface IPowerSupply

    {

        string ProducePower();

    }

    internal class PowerSupply : IPowerSupply

    {

        public string ProducePower()

        {

            return "Producing Power";

        }

    }

​

    public interface IHardDrive

    {

        string WritingData();

​

    }

​

    internal class HardDrive : IHardDrive

    {

        public string WritingData()

        {

            return "Writing Data";

        }

    }

​

    public interface IRam

    {

        string StoringData();

    }

​

    internal class Ram : IRam

    {

        public string StoringData()

        {

            return "Storing Data";

        }

    }

​

    public interface ICpu

    {

        string Calculate();

    }

​

    internal class Cpu : ICpu

    {

        public string Calculate()

        {

            return "Calculating";

        }

    }

​

    public interface IMotherBoard

    {

        string Motherboarding();

    }

​

    internal class MotherBoard : IMotherBoard

    {

        public string Motherboarding()

        {

            return "Connecting everything";

        }

    }