Question: A computer program that translates one program instructions at a time into machine language

Answer:

A computer program that translates one program instruction at a time into machine language is called an "interpreter."

An interpreter is a software program that reads and executes source code line by line. It analyzes each instruction, translates it into machine code or intermediate code, and immediately executes it. Unlike a compiler, which translates the entire program before execution, an interpreter performs the translation and execution process in a sequential manner.

When an interpreter encounters a specific line of code, it interprets and executes it on-the-fly. This allows for immediate feedback and dynamic execution. If an error occurs in a particular line, the interpreter stops the execution and reports the error at that moment.

Interpreted languages, such as Python, JavaScript, and Ruby, rely on interpreters to execute their code. The interpreter parses and executes the code one statement at a time, providing flexibility and interactivity during the development and execution process. Interpreters are also commonly used in scripting languages, where quick execution and ease of debugging are important.

It's important to note that interpreters generally have a slower execution speed compared to compiled programs, as they perform the translation process during runtime. However, they offer advantages such as easier debugging, portability across different platforms, and dynamic runtime behavior.