What does the terminals do in Halo 3?

Answer 1

There are three found on the first level called the Ark. Find the first immediately upon entering. There'll be a door to the left, which is entered to find the first of the terminals. To find the second terminal look for the structure that enables tanks across the bride of light. The terminal can be found directly behind the bridge controls. The last terminal on level one is a challenge to locate. Following a battle with a scarab there is a large structure, followed by a door and a staircase - look under the staircase.

Then there are three on the Covenant. The first of these terminals, overall terminal four, is accessed via the elevator leading to the tower controls. Reach the terminal by jumping from the elevator to an adjacent platform. The fifth terminal can be reached by using a hornet, heading towards the second tower. If you're going the right way you'll hear a voice saying the tower is clear. The terminal is inside the tower. Tower three holds the sixth terminal on a platform.

There are 2 left. Terminal 7 is found at the beginning of the final level in Halo 3. To find it, simply head forward from the start of the level, until you encounter the area with a few structural beams going from one wall into another. At this point, turn right, and look for beam separate from the rest, Follow this beam into a doorway. Cortana will ask you, "Where are you going?". Turn left once inside, and the Terminal should be there. The last can be found on the level Cortana, and is located on the basement floor of the room with the Tilt Skull in it. At the very bottom of this room, there is a Gravity Hammer leaning against a stand. This stand is a Terminal, it does not look like the other terminals in the game, it looks like a pedestal of light.

Upon accessing it, Cortana will take over your HUD with a brief message

Answer 2

OK I could explain where all the terminals are or I could just give you a link to a website that will explain everything. I'll go with the link. Here you go: http://www.gamefaqs.com/console/xbox360/code/926632.HTML

(PS- just scroll down to you get to terminal locations)

Or heres a YouTube link if that's better for you http://au.youtube.com/watch?v=RczXMp7RXko

Answer 3

You get an achievement if you access all the terminals. If you read them carefully, they give you information on the back-story of Halo. It is not understandable unless you read the book, Halo: Cryptum The forerunner Saga.

Answer 4

getting all of the terminals in halo 3 gets you the achievement 'marathon man' worth 40 gamescore and a certain armor tht i cannot remember XD

Answer 5

there is a video guide here

http://gizmosgadgetsnews.info/games/halo-3-odst-audiophile-locations