Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. HAL/S is a real-time aerospace programming language, best known for its use in the Space Shuttle program. It was designed by Intermetrics in the 1970s for NASA. HAL/S is written in XPL, a dialect of PL/I. The three key factors in writing the language were reliability, efficiency, a ...Full description
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. HAL/S is a real-time aerospace programming language, best known for its use in the Space Shuttle program. It was designed by Intermetrics in the 1970s for NASA. HAL/S is written in XPL, a dialect of PL/I. The three key factors in writing the language were reliability, efficiency, and machine-independence. The language is designed to allow aerospace-related tasks (such as vector/matrix arithmetic) to be accomplished in a way that is easily understandable to people who have spaceflight knowledge, but may not necessarily have proficiency with computer programming.