Systems Design and Development - Lecture Slides | CS 101, Study notes of Computer Science

Download Systems Design and Development - Lecture Slides | CS 101 and more Study notes Computer Science in PDF only on Docsity! 1 Chapter 12 Systems Design and Development System Life Cycle Investigation Analysis Design Development Implementation Maintenance Retirement Writing a program Define the problem Devising, refining and testing the algorithm Algorithm to Program Writing the program Testing and debugging the program Computer Languages Low level languages – Machine dependent – Assembler High level languages – “One statement to many” translation – Easy to transport – Easier( than low level languages) to write and debug Low level languages (Example) Machine language – EBFB 3C61 – EBFD 7206 – EBFF 3C7A – EC01 7702 – EC03 2C20 – EC05 8B1E Assembly language – CMP AL, 61 – JB K61 – CMP AL, 7A – JA K61 – SUB AL, 20 – MOV BX, BTAIL High Level Languages FORTRAN (Formula Translation) COBOL (Common Business Oriented Language) LISP(list processing) BASIC (Beginner’s All-purpose Symbolic Instruction Code) Pascal (mathematician) Ada (Ada Lovelace) PROLOG (Programming Logic) LOGO and more….