Sound Port

The other name for sound port is Stereo pins. It is commonly used as computer pins.
The green slot is used for Speaker.
The pink one is for Mic.
The blue one is for Line in.
Sometimes orange slot is also present and is used for spk/line out.

MIDI Port

MIDI ( musical instrument digital interface)
Its colour is Yellow.
It is used to insert sound card,joystick etc.

System ports

ports are the small spaces where some external devices can be attached.
Different types of ports are present in a system.

Some ports are:
1. MIDI port
2. Sound port
3. USB port

Computer hardware

computer hardware is that part of the computer which can be touched physically.
It is rhe hard part of the computer.
Hardware is sold in the market according to the type of the system.
some parts of hardware are very expensive,while some are cheap.

Hacking

Hacking is a method of stealing some software or system professionally.
Now a days hacking is much popular and a number of big software companies get hacked.
Hackers are the professional robbers. They steal the system and sell it costly.