Which translator translate low level language 1010111 to machines language?

Only assembly languages are generally considered low-level programming languages, so one could argue that there is only one low-level language.

However, there are as many assembly languages as there are processor models or families, as each processor family implements its own set of machine code instructions. Different manufacturers not only invent different mnemonics for similar machine code operations to suit conventions and hardware architecture (e.g. MOVE vs LOAD/SAVE), but also support different notations.

Therefore, conceptually, the assembly language is the only low level programming language. However, the standpoint of view of learning the language, or from that of tools to support the language, there are numerous assembly languages, thus numerous low-level languages.