What is Low-Level Programming Language?

Low-level programming languages are programming languages that have very little abstraction of programming concepts, which means they tend to be more complex and less efficient than high-level programming languages. They are written using a structure similar to machine code or assembly language. They are written similarly to a processor's instructions and often take much longer to execute when compared to high-level programming systems because of their complexity. Other characteristics of low-level programming languages include memory efficiency, lack of portability (the ability to be used with different computing systems), and higher difficulty for debugging and maintenance.