sead kulenovic wrote:
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How to download program to 8052's internal program memory(8K rom or eprom).

You can't. A 8052 is a mask ROM device, so you have to use external program memory.

If you are talking about a 87C52 or 89C52 you can program them, but the programming methods vary from device to device.

Is there any way to do it by LPT?

Perhaps. Tell us exactly what device you are talking about, and someone may be able to help you. But try reading the datasheet first.

Best regards,

Mikkel C. Simonsen