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2. PDF - Wikipedia

   en.wikipedia.org/wiki/PDF

   PDF 2.0 defines 256-bit AES encryption as the standard for PDF 2.0 files. The PDF Reference also defines ways that third parties can define their own encryption systems for PDF. PDF files may be digitally signed, to provide secure authentication; complete details on implementing digital signatures in PDF are provided in ISO 32000-2.

3. Sumatra PDF - Wikipedia

   en.wikipedia.org/wiki/Sumatra_PDF

   The first version of Sumatra PDF, designated version 0.1, was based on Xpdf 0.2 and was released on 1 June 2006. It switched to Poppler from version 0.2. In version 0.4, it changed to MuPDF for more speed [4] and better support for the Windows platform. Poppler remained as alternative engine for a time, and from version 0.6 to 0.8 it was ...

4. Adobe Acrobat version history - Wikipedia

   en.wikipedia.org/wiki/Adobe_Acrobat_version_history

   As of this release, the 64-bit (x64) version of the software is being rolled out [35] 2022 Standard/Pro October 11, 2022 Windows/Mac Both 32-bit (x86) and 64-bit (x64) are available. [36] It presents a compact UI experience, helps export PDF from Page Thumbnails, and provides readiness with macOS Ventura. 23.003 Windows/Mac ... 24.002 May 05, 2024

5. 64-bit computing - Wikipedia

   en.wikipedia.org/wiki/64-bit_computing

   DEC releases OpenVMS 7.0, the first full 64-bit version of OpenVMS for Alpha. First 64-bit Linux distribution for the Alpha architecture is released. [22] 1996 Support for the R4x00 processors in 64-bit mode is added by Silicon Graphics to the IRIX operating system in release 6.2. 1998 Sun releases Solaris 7, with full 64-bit UltraSPARC support ...

6. Large-file support - Wikipedia

   en.wikipedia.org/wiki/Large-file_support

   The much-used zlib library started to support 64-bit large-files on 32-bit platform not before 2006. [6] The problem disappeared slowly with PCs and workstations moving completely to 64-bit computing. Microsoft Windows Server 2008 has been the last server version to be shipped in 32-bit. [7]

7. x86-64 - Wikipedia

   en.wikipedia.org/wiki/X86-64

   AMD64 (also variously referred to by AMD in their literature and documentation as “AMD 64-bit Technology” and “AMD x86-64 Architecture”) was created as an alternative to the radically different IA-64 architecture designed by Intel and Hewlett-Packard, which was backward-incompatible with IA-32, the 32-bit version of the x86 architecture.