Software

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Information about Software
Education

Published on February 17, 2009

Author: anantkrazzy

Source: authorstream.com

Acknowledgement : Acknowledgement We are thankful to the people who have helped in th making of this presentation, These people include our parents, our own Disha mam and our friends. Slide 2: Software Concept Slide 4: CONFUSED ? Slide 5: A computer is a physical collection of bits that you can touch. But inside is this mystical stuff called software. Software is the general term for information . Slide 6: Computer is a hardware device that reads software. Programs. Software-variable part; hardware-invariable part. Machine code . Slide 7: History of Software Slide 8: Software has a long evolving history. 1940s: First computer users wrote machine code by hand. 1950s:First-generation optimizing compilers – Machine Language. 1960s: Second generation software . Slide 9: OPERATION 01 02 03 04 05 06 07 08 FUNCTION Addition Subtraction Multiplication Division Place number in accumulator Accumulator content placed in memory Performs input device input into accumulator Perform output from accumulator to output device Slide 10: Function code Mnemonic Description 01 ADD Addition 02 SUB Subtraction 03 MULT Multiplication 04 DIV Division O5 LDA Load accumulator with value 06 STO Store content of accumulator 07 IN Read a value into accumulator 08 OUT Output value in accumulator to output device 09 JUM Jump Unconditionally 10 JGT Jump To The Address Portion if the content of a accumulator are greater than zero Third Generation known as High level languages. : Third Generation known as High level languages. THIRD GENERATION : THIRD GENERATION Fourth Generation – 4GL’s : Fourth Generation – 4GL’s Slide 14: What Is Program? Slide 15: System Software Operating System : Operating System The Three Basic Functions Are : Managing Resources. Providing User Interface. Running Application. Slide 17: Utilities. Device drivers. Language translators. Slide 18: Application Software Slide 19: Multitude of programs. To function within the operating system. Focuses Programming language : Programming language COBOL FORTRAN Slide 21: Use of Fourth Generation Languages. Two types: : Two types: Special purpose. General Purpose . Slide 23: Operation of Software Slide 24: Computer software has to be "loaded“. Passing Instructions. Thus, carry out an Operation. Instructions may be performed : Instructions may be performed Slide 26: A simple example of the way software operates. When a user selects an entry such as "Copy" from a menu. Slide 28: Three Layers of Software Slide 31: Software Copy rights. Software Licence. Sources : Sources Peter Norton. V.Rajaraman. Pradeep Sinha. Internet.

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