Disadvantages Of Assembly Language In Embedded System

ADVANTAGES OF ASSEMBLY LANGUAGE IN EMBEDDED SYSTEM:

Embedded system have a very limited resources. It has to work against some time limits, By a specific time , the specific job needs to complete. Generally they do not have secondary storage devices such as CDROM or floppy disk.

Assembly language was the first for programming embedded systems till nowadays there are many more languages to program these systems. Many more languages to program these systems are C, C++, Java and etc with its new enhancement J2ME. Tools that are presence is used to model UML, SDL software as indicated maturity of embedded programming software.

The majority of software for embedded system is still done in C language, C++ is also increasing in embedded

They are once widely used for any sorts of programming. However, by the 1980s (1990s on computers).Today, assembly language is used primarily for direct hardware manipulation and access to specific processor instructions.

Although assembly languages are used relatively less in modern embedded systems, learning assembly languages is very important. Assembly language is not another programming language however it is a low-level interface between software and hardware. It provides an understanding of how a processor executes any program.

Assembly programming is the prerequisite knowledge of compilers. Assembly programs can in fact run faster than programs developed in high-level languages such as C language. Compilers sometimes cannot exploit the hardware features of the processor, or when the processor provides specific operations that compilers do not know. Therefore, it is often that speed-sensitive amount of an application is written in assembly language. Some operations have to be performed in assembly language because there is no equivalent statement in high-level languages. This is why assembly programs are usually embedded in kernel codes pf operating systems to implement low-level work, such as booting and CPU scheduling. Finally and importantly, understanding how high-level

Assembly language suitable for time critical jobs or suitable for writing interrupt service and other memories. It gives the user excellent performance, complete control over the system’s resources and efficiency.

It consists of binary digits and some symbols. It depends on machine & Machine language directly executes on computer which do not need of language translator for machine language. Assembly Language written in low level language is called object code & is able to tune the code to be smaller or more advanced, and that more system-dependent features are often available. Assembly language is far away from human language and are not easy to read . Languages, such as Assembler, require highly skilled technical people, resulting in a higher cost for an employer. The cryptic nature of the syntax also can cause longer troubleshooting times, depending on the skill level of the technician