What are the digital readers in front of a deskop computer's tower called?

Q. Alright, so I go to one of those computer gaming stores where you can play loads of games online.
Apparently, all the stuff they have there is top of the line equipment.
So I look at the towers of their computers and there were these digital readers that I caught a slight glimpse of, which told the computer's temperature and other information..

Now, what is that digital reader called?
THANKS!!!!

A. 5.25" Black Lian Li Bezel Guage 7-Backlight Illuminated Thermometer / Fan Bus
http://www.frozencpu.com/products/1349/cpa-41/525_Black_Lian_Li_Bezel_Guage_7-Backlight_Illuminated_Thermometer_Fan_Bus.html?tl=g34c137s292

I believe the ones you are asking about are built into the case.

Original Question

What could i sell at a yard Sale?

Q. I am having a yard sale and what time should i start it. Also what is some stuff that people would buy. I am selling
CD's
Book's
DVD's
Skim Board
Board Games.
Computer Mouse
Computer Games
Portable CD players
Exercise Equipment (ab swing, bike)
Head Phones
Toy Cars
Oh and can you sell a broken ipod and i have an mp3 player that doesnt work but has some songs on it could i also sell that? If you could give me some prices that i should sell those items for that would be a great.

A. you asked yesterday i gave you prices.thats what people are going to offer you i am a yard sale person i have them every summer i will be having one this summer.

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