Download and install a compatible archiver like 7-Zip or WinRAR . Right-click on the .001 file. Select 7-Zip > Extract Here or Extract to "jpC102/" .

You cannot open a .001 file alone. You must have all subsequent parts (e.g., jpC102.7z.002 , jpC102.7z.003 , etc.) in the same folder . Use 7-Zip or WinRAR:

Files with .jpc extensions are often JPEG 2000 Code Stream files, which are high-quality bitmap images.

The software will automatically detect and join the other parts to recreate the original file. Once extracted, you will likely find one of the following: How to Extract .7z.001 files - Microsoft Q&A

The .001 extension indicates that this is the first part of a "split archive". Larger files are often broken into smaller segments to make them easier to download or share.

A file named is a specific type of compressed archive. What is this file?

The .7z portion signifies it was created using 7-Zip , a free, open-source file compression tool known for high compression ratios.

"JPC" is also the name of a Java-based x86 PC emulator. How to Open It