Within the framework of computer architecture by the term "64-bit" we understand 64-bit integers and other data types having the size of 64 bits. By "64-bit systems" we understand 64-bit architectures of microprocessors (for example, EM64T, IA-64) or 64-bit operating systems (for example, Windows XP Professional x64 Edition). We can speak about compilers generating 64-bit program code or specialized tools performing test of 64-bit code (for example, Viva64).
- Andrey Karpov. 64 bit.
- Wikipedia. 64-bit.
- Wikipedia. Itanium.
- Wikipedia. AMD64.
- Evgeniy Ryzhkov, Andrey Karpov. AMD64 (EM64T) architecture.
- John R. Mashey. The long road to 64 bits.