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2. 64-bit computing - Wikipedia

   en.wikipedia.org/wiki/64-bit_computing

   A 64-bit word can be expressed as a sequence of 16 hexadecimal digits. In computer architecture, 64-bit integers, memory addresses, or other data units [a] are those that are 64 bits wide. Also, 64-bit central processing units (CPU) and arithmetic logic units (ALU) are those that are based on processor registers, address buses, or data buses of ...

3. x86-64 - Wikipedia

   en.wikipedia.org/wiki/X86-64

   The five-volume set of the x86-64 Architecture Programmer's Manual, as published and distributed by AMD in 2002. x86-64 (also known as x64, x86_64, AMD64, and Intel 64) [note 1] is a 64-bit version of the x86 instruction set, first announced in 1999. It introduced two new modes of operation, 64-bit mode and compatibility mode, along with a new ...

4. WoW64 - Wikipedia

   en.wikipedia.org/wiki/WoW64

   In computing on Microsoft platforms, WoW64 (W indows 32-bit o n W indows 64 -bit) is a subsystem of the Windows operating system capable of running 32-bit applications on 64-bit Windows. [1] It is included in all 64-bit versions of Windows, except in Windows Server Server Core where it is an optional component, and Windows Nano Server where it ...

5. Windows API - Wikipedia

   en.wikipedia.org/wiki/Windows_API

   The Windows API, informally WinAPI, is the foundational application programming interface (API) that allows a computer program to access the features of the Microsoft Windows operating system in which the program is running. Each major version of the Windows API has a distinct name that identifies a compatibility aspect of that version.

6. Comparison of Microsoft Windows versions - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_Microsoft...

   Comparison of Microsoft Windows versions. Appearance. Microsoft Windows is the name of several families of computer software operating systems created by Microsoft. Microsoft first introduced an operating environment named Windows in November 1985 as an add-on to MS-DOS in response to the growing interest in graphical user interfaces (GUIs).

7. Directory structure - Wikipedia

   en.wikipedia.org/wiki/Directory_structure

   64-bit architecture: 64-bit programs are installed in this folder. \Program Files (x86) Appears on 64-bit editions of Windows. 32-bit and 16-bit programs are by default installed in this folder, even though 16-bit programs do not run on 64-bit Windows. [3] \ProgramData (hidden) Contains program data that is expected to be accessed by computer ...