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Minimal instruction set computer (MISC) is a central processing unit (CPU) architecture, usually in the form of a microprocessor, with a very small number of basic operations and corresponding opcodes, together forming an instruction set. Such sets are commonly stack-based rather than register-based to reduce the size of operand specifiers.
An instruction set architecture (ISA) is an abstract model of a computer, also referred to as computer architecture.A realization of an ISA is called an implementation.An ISA permits multiple implementations that may vary in performance, physical size, and monetary cost (among other things); because the ISA serves as the interface between software and hardware.
Superscalar, out-of-order execution, 6 execution units, SMP support PowerPC 620: 1997 5 Out-of-order execution, SMP support PWRficient PA6T 2007 Superscalar, out-of-order execution, 6 execution units R4000: 1991 8 Scalar StrongARM SA-110: 1996 5 Scalar, in-order SuperH SH2: 5 SuperH SH2A: 2006 5 Superscalar, Harvard architecture SPARC ...
After converting X86 binary to the micro-operations used internally, the total number of operations is close to what is produced for a comparable RISC ISA. [5] The iron law of processor performance makes this trade-off explicit and pushes for optimization of T i m e P r o g r a m {\displaystyle \mathrm {\tfrac {Time}{Program}} } as a whole, not ...
In computer architecture, 128-bit integers, memory addresses, or other data units are those that are 128 bits (16 octets) wide.Also, 128-bit central processing unit (CPU) and arithmetic logic unit (ALU) architectures are those that are based on registers, address buses, or data buses of that size.
A word is a fixed-sized datum handled as a unit by the instruction set or the hardware of the processor. The number of bits or digits [a] in a word (the word size, word width, or word length) is an important characteristic of any specific processor design or computer architecture.
In computer architecture, 16-bit integers, memory addresses, or other data units are those that are 16 bits (2 octets) wide.Also, 16-bit central processing unit (CPU) and arithmetic logic unit (ALU) architectures are those that are based on registers, address buses, or data buses of that size. 16-bit microcomputers are microcomputers that use 16-bit microprocessors.
A von Neumann architecture scheme. The von Neumann architecture—also known as the von Neumann model or Princeton architecture—is a computer architecture based on the First Draft of a Report on the EDVAC, [1] written by John von Neumann in 1945, describing designs discussed with John Mauchly and J. Presper Eckert at the University of Pennsylvania's Moore School of Electrical Engineering.