Software Bugs: Historical Instances and Implications for Software Engineering, Lecture notes of Java Programming

Download Software Bugs: Historical Instances and Implications for Software Engineering and more Lecture notes Java Programming in PDF only on Docsity! Software Engineering Imran Ashraf Some Well Known Software Bugs – Ariane 5 – Patriot Missile killed 28 soldiers of US own – Intel (floating point error) – Y2K Bug – NHS IT system – Health Care Software Patriot Missile • Patriot missiles were used as a defense for Iraqi Scud missiles • The Patriot missiles failed several times to hit Scud missiles • Worst failure was that killed 28 U.S. soldiers in Dhahran, Saudi Arabia • Investigation concluded that it happened due to “Software Bug” Intel (floating point error cost 470 M$) • Intel Pentium floating point division error in 1993 much publicized chips • With an estimated 3 million to 5 million defective chips in circulation • The bug ultimately costs Intel $475 million. Y2K Bug Perhaps the Y2K problem was the most crucial problem of last century What is a Computer Program? First Popular Programming Language The language Fortran was developed at IBM in the mid 1950s It was first widely used high-level general purpose programming language What is software? What is the difference in Software and Program? SOFTWARE ENGINEERING The establishment and use of sound engineering principles in order to produce quality software that is within time and budget. Software Engineering Vs Computer Science