Three Main System Software Types Operating system Manages computers processes

Three main system software types operating system

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Three Main System Software Types Operating system Manages computer’s processes Schedule tasks Manage hardware and software resources Maintain system security Enable sharing Handle Interrupts Utilities Routine that enables the user to perform certain basic data processing activities Copy, erase, sort, merge, et cetera Language translators Change programmer instructions into computer instructions Highest form for translation is a natural language 8-12
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Types of software based on their function in day life Operating system Utility system Word processor Spread sheet DBMS Application system Programming language System development tools Communication Application package
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Data Processing Approach Batch Processing On Line Processing
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Batch Processing A batch is a group of similar transactions that are accumulated over time and then processed together. The transactions must be independent of one another during the time period over which the transactions are accumulated in order for batch processing to be appropriate. A time lag exists between the event and the processing.
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Sales Orders Keying Unedited Transactions Edit Run Errors Edited Transactions Sort Run Transactions Update Run Old Master (father) AR AR New Master (son) Transactions (eventually transferred to an archive file) correct errors and resubmit catches clerical errors rearranges the transaction data by key field so that it is in the same sequence as the master file changes the values in the master file to reflect the transactions that have occurred Batch Processing/Sequential File
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Steps in Batch Processing/Sequential File Keystroke - source documents are transcribed by clerks to magnetic tape for processing later Edit Run - identifies clerical errors in the batch and places them into an error file Sort Run - places the transaction file in the same order as the master file using a primary key Update Run
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  • Fall '19
  • Computer network, Local area network

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