500Khz sampling rate for adc and showing on the 7" lcd

Hi,
I have a mini6410 board. The ADC on the S3C6410 has 1Mhz sampling rate.
I want to know, Can I use the ADC with 500khz sampling rate, then show the
adc value on the 7inch LCD?
I want to work this under the linux os. is it possible?
Also I have another question. My board has 7inch lcd. I want to show the
adc value on the lcd, similar to oscilloscope. How can I access to the LCD
driver and function to accessing to the LCD?
Is there any example code for LCD display (7inch) ?
In the other word, I want to develop a oscilloscope with 500 khz sampling
rate with mini6410 and 7inch color lcd.
Please help me step by step.

Maybe you can. You will need a DMA based ADC driver to get the data with
500 kHz into the main memory. I'm sure this kind of driver does not exist
yet.
And then I would recommend to use 'Qt' and its extension 'QWT' to be able
to draw graphs from the data to the attached LCD unit.

Thank you for your answer.
I'm worked with arm9 from atmel company without lcd.
Now I want to develop this project.
I don't used 'Qt'. Qt is an IDE? Please give me more information about QT
and QWT and if you have any weblink, please introduce to me.

Try http://lmgtfy.com/?q=Qt+QWT