How Do I Make a Device Which Can View the Only PDF?

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How do I make a device which can view the only PDF? An inexpensive device with limited functionality, something similar to eBook readers but with LCD screen. I am unable to find which type of PCB to use and how to program it.

I have a Sony PRS-900 which can display a readable PDF in landscape mode at original size but is quite small and needs lots of scrolling. In portrait, any zooming usually makes them unreadable - PDF articles seem to be mostly 'untagged' - the PDF reader on the Sony doesn't reflow them well.

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Type on PDF: All You Need to Know

PDF viewer apps on Android smartphones are generally not all that good, except for those that work well on low resolutions. The best of the bunch are small, free (or, if you need a license/subscription, free) desktop PDF readers (although I am getting an old MacBook Pro with Chrome on it here, as I do not want to pay another 29/year to Adobe), or apps that provide more complex PDF content editing such as IDF, or Caliber. I don't know if you know this, but many mobile browsers (Android 4.0+) have some support for the Open Document Format (ODF), but they are all proprietary and the majority of the browsers available on mobile won't even display PDFs. At this stage, Adobe Reader and other desktop users should just assume they can't view PDFs, though the Android/Amazon Kindle support is improving. What you can do about it Here are some good.