Differentiate between program translation and program interpretation.

The program translation model makes the execution gap through translating a program written in a programming language, termed as the source program (SP), in an equivalent program into the machine or assembly language of the computer system, termed as the target program (TP). Subsequent diagram depicts the program translation model.

In a program interpretation process, the interpreter reads the source program and stores this in its memory. This bridges an execution gap without making a machine language program therefore we can say that the interpreter is a language translator. Although, this takes one statement of higher-level language at a time, translates this in machine language and executes this immediately. Translation and execution are continued for each statement. The absence of a target program means the absence of an outer interface of the interpreter. Thus language-processing activity of an interpreter can't be separated by its program execution activities. Therefore we can say that interpreter executes a program written into a programming language. In essence, the execution gap vanishes. Subsequent figure depicts the program interpretation model.

The program translation model characteristics are:

• A program should be translated before this can be executed.
• The translated program may be saved into a file. The saved program may be executed repeatedly.
• A program should be retranslated subsequent modifications.

The program interpretation model characteristics are:

• The source program is retained into the source form itself that is no target program form exists.
• A statement is analyzed throughout its interpretation.