Most programs are written in C, Assemblers and compilers included.
The first compiler couldn't be compiled since there were obviously no compilers! It had to be assembled, using assembly language and an assembler. Once you have one compiler, you can easily write others. Today, most compilers are written using C++, including the C++ compiler itself (the original was written in C, of course).
Yes most weight machines come with assembly instructions.
They don't. All compilers produce machine code by default, with the exception of the Java compiler which emits Java byte code suitable for interpretation by the Java virtual machine at runtime. What you call assembly is actually the disassembled machine code. That is, the machine code produced by the compiler is translated into the equivalent disassembly. This is the code you see when you hit a breakpoint and examine the disassembled machine code. You will also see disassembly when debugging code for which no source code exists (as is the case with most 3rd party libraries). If you wish to view the actual assembly, along with your comments and source code, then you have to configure your compiler to emit assembly rather than the default machine code. You would do this if you wished to tweak the assembled code prior to final assembly, for instance, to take advantage of manual optimisations. However, modern compilers are capable of optimising code more efficiently and more easily than any human can so there's rarely a need to manually optimise.
Most likely you haven't installed any compilers, otherwise you would know.
I believe that most programming languages are written in English, however things such as variable names are programmer-defined; it is only the keywords that are unchangeable. I'm sure that someone can or has written parsers/compilers which accept keywords in languages other than English.
With a Wheel Bearing Hub Assembly, you might get both the wheel bearing and the hub assembly. Sometimes, especially with FWD vehicles, the front hubs will not have the bearing with them but the rear hub assembly will. Most part manufacturers will follow what ever the auto company recommends.
When looking through an instruction manual for how to build something.
There are many C compilers. In modern usage, the most common ones are Microsoft Visual C++ (which can also compile C programs) and GCC (GNU Compiler Collecttion, originally GNU C Compiler).
who represent the general assembly
It depends on what kind of work they do. If they are programmers, they will use compilers. Any other kinds of computer work in an office would not involve compilers, so most people in an office would not use one.
Machine level instructions can be converted to readable assembly language using a disassembler. If the machine instructions originated from a higher level language, there may also be a decompiler to create something resembling the original high level language version of the program.
Yes this unit does require assembly and most stores have an assembly provider for you to utilize.