The two main types of nucleic acids are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). DNA is the genetic material found in all living organisms and is found in the nucleus of eukaryotes and in the chloroplasts and mitochondria. In prokaryotes, the DNA is not enclosed in a membranous envelope.
A program written in a compiled language is first translated to machine language by another program called a compiler. The compiler parses each statement in the program and outputs an equivalent sequence of machine or assembly instructions.
A system of signals used to represent letters or numbers in transmitting messages. The instructions in a computer program. Instructions written by a programmer in a programming language are often called source code. Instructions that have been converted into machine language that the computer understands are called machine code or executable code. See also programming language.