System programming is the activity of programming computer system software.Systems Programming is the activity of writing and maintaining system software.
System software is the layer between the hardware and application software; it controls the hardware, and provides services to applications.
The primary distinguishing characteristic of systems programming when compared to application programming is that application programming aims to produce software which provides services to the user directly (e.g. word processor),
Systems programming is the design, implementation, and maintenance of all of the programs like Operating System, assembler, linker, kernel, Bios, Macro Processor, Loader, Assembler etc….
Assembly language is a low-level programming language for a computer or other programmable device specific to a particular computer architecture in contrast to most high-level programming languages, which are generally portable across multiple systems.
The system programming when compared with application programming is that the SP handles the OS software to work with hardware resources
Application programmers only wrote programs that end-users ran directly. This includes the case where the end-user is the same person as the applications programmer, running his or her own programs directly.
System programming is developing programs that use the utilities provided by underlying kernel. In short, the system programming when compared with application programming is that the SP handles the OS software to work with hardware resources and AP handles the end users activity.
A system programming language usually refers to a programming language used for system programming; such languages are designed for writing system software, which usually requires different development approaches when compared with application software.