Machine code

In computer programmingmachine code is any low-level language, consisting of machine language instructions, which is used to control a 's central processing unit ().

Each instruction causes the to perform a very specific task, such as a load, a store, a jump, or an  unit (ALU) operation on one or more units of in the 's registers or memory.

Machine code is a strictly numerical language which is designed to run as fast as possible, and may be considered as the lowest-level representation of a compiled or assembled  or as a primitive and -dependent language.

While it is possible to write programs directly in machine code, managing individual bits and calculating numerical addresses and constants manually is tedious and error-prone.

For this reason, programs are very rarely directly in machine code in modern contexts, but may be done for low level debugging, program patching (especially when assembler source is not available) and assembly language disassembly.

The majority of practical programs today are in higher-level languages or assembly language.

The source code is then translated to executable machine code by utilities such as compilers, assemblers, and linkers, with the important exception of interpreted programs, which are not translated into machine code.

However, the interpreter itself, which may be seen as an executor or processor performing the instructions of the source code, typically consists of directly executable machine code (generated from assembly or high-level language source code).

Machine code is by the lowest level of detail visible to the programmer, but internally many processors use microcode or optimise and transform machine code instructions into sequences of micro-ops.

This is not generally considered to be a machine code.

Last Updated on 3 years by pinc