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What (who) is byte-code interpreter - definition

FORM OF INSTRUCTION SET DESIGNED TO BE RUN BY A SOFTWARE INTERPRETER

Byte code; P-Code; P-Codes; Intermediate code; Byte-code; Bitcode; Byte Code; Bytecodes; Portable code; P-code; Byte-compile; Byte-compiler; Byte-code compiler

byte-code interpreter

<software> A program that executes a byte code program. An example is the Java Virtual Machine. (1999-11-28)

byte

AMERICAN COMPUTING MAGAZINE

BYTE Magazine; BYTE magazine; Byte magazine; BiX -- The Byte Information Exchange; BYTE; Byte Magazine; Byte Publications Inc.; BYTE (magazine); BYTE Publications Inc.; BYTE Publications, Inc.; BYTE Publications; Byte Publications, Inc.; Byte Publications; BYTE - The small systems journal; BYTE Books; Byte - the Small Systems Journal; Byte: The Small Systems Journal; BYTE - the small systems journal; BYTE - the Small Systems Journal

<unit> /bi:t/ (B) A component in the machine data hierarchy larger than a bit and usually smaller than a word; now nearly always eight bits and the smallest addressable unit of storage. A byte typically holds one character. A byte may be 9 bits on 36-bit computers. Some older architectures used "byte" for quantities of 6 or 7 bits, and the PDP-10 and IBM 7030 supported "bytes" that were actually bit-fields of 1 to 36 (or 64) bits! These usages are now obsolete, and even 9-bit bytes have become rare in the general trend toward power-of-2 word sizes. The term was coined by Werner Buchholz in 1956 during the early design phase for the IBM Stretch computer. It was a mutation of the word "bite" intended to avoid confusion with "bit". In 1962 he described it as "a group of bits used to encode a character, or the number of bits transmitted in parallel to and from input-output units". The move to an 8-bit byte happened in late 1956, and this size was later adopted and promulgated as a standard by the System/360 operating system (announced April 1964). James S. Jones <jsjones@graceland.edu> adds: I am sure I read in a mid-1970's brochure by IBM that outlined the history of computers that BYTE was an acronym that stood for "Bit asYnchronous Transmission E..?" which related to width of the bus between the Stretch CPU and its CRT-memory (prior to Core). Terry Carr <bear@mich.com> says: In the early days IBM taught that a series of bits transferred together (like so many yoked oxen) formed a Binary Yoked Transfer Element (BYTE). [True origin? First 8-bit byte architecture?] See also nibble, octet. [Jargon File] (2003-09-21)

Interpreter (computing)

PROGRAM THAT EXECUTES SOURCE CODE WITHOUT A SEPARATE COMPILATION STEP

Interpreted language; Interpreted Language; Interpreted programming language; Interpreter (computer software); Self-interpreter; Interpreter (programming); Interpreted (programming languages); Runtime interpreter; Evaluator; Metainterpreter; Interpretive language; Interpretive Languages; Interprted language; Interpreter (computer science); Interpreter computing; Interpreted computer language; Bytecode interpreter; Code interpretation; Interpretive programming language; Code interpreter; Interpreter (software); Abstract syntax tree interpreter; Compreter; Compiler-interpreter; Compiler–interpreter

In computer science, an interpreter is a computer program that directly executes instructions written in a programming or scripting language, without requiring them previously to have been compiled into a machine language program. An interpreter generally uses one of the following strategies for program execution:

https://en.wikipedia.org/wiki/Interpreter_(computing)

Wikipedia

Bytecode

Bytecode (also called portable code or p-code) is a form of instruction set designed for efficient execution by a software interpreter. Unlike human-readable source code, bytecodes are compact numeric codes, constants, and references (normally numeric addresses) that encode the result of compiler parsing and performing semantic analysis of things like type, scope, and nesting depths of program objects.

The name bytecode stems from instruction sets that have one-byte opcodes followed by optional parameters. Intermediate representations such as bytecode may be output by programming language implementations to ease interpretation, or it may be used to reduce hardware and operating system dependence by allowing the same code to run cross-platform, on different devices. Bytecode may often be either directly executed on a virtual machine (a p-code machine, i.e., interpreter), or it may be further compiled into machine code for better performance.

Since bytecode instructions are processed by software, they may be arbitrarily complex, but are nonetheless often akin to traditional hardware instructions: virtual stack machines are the most common, but virtual register machines have been built also. Different parts may often be stored in separate files, similar to object modules, but dynamically loaded during execution.

https://en.wikipedia.org/wiki/Bytecode