Define Software is in machine language or not
Software is in machine language, today it is often developed by first writing in a high-level language or an assembly language or in application-oriented language.
High-level languages include C++, Java, C, COBOL, FORTRAN, Python, PHP, etc. Application-oriented languages comprise constructs and keywords to develop a program for a specific class of applications, like simulating a computer network. Assembly languages are related to architecture of the processor they are targeted for.
That is, for a computer with an Intel Pentium processor, one would develop an assembly language program in Intel assembly language. If processor is an IBM Power processor, one would write an IBM Power assembly language program.