The arithmetic logic unit (ALU), which performs arithmetic and logical operations.
The control unit (CU), which extracts instructions from memory and decodes and executes them, calling on the ALU when necessary.
Coding works through programming/programs. Programs have different coding languages, and text files. The code within the file is known as the "source CODE" this code is used in different ways, causing for the possibility of separate binary files that computers can directly run. Hope I helped.
It’s Debug. definition: “identify and remove errors from (computer hardware or software)”.