Computer Studies Form 3 Notes - Easy Elimu

Computer Studies Notes Form 3 (4)

This category contains Computer Studies Form 3 notes as aggregated from the various high school approved text books, including Longhorn etc. It covers the entire Computer Studies Form 3 syllabus, for the preparation of national and local exams.

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DATA REPRESENTATION IN A COMPUTER - Computer Studies Form 3 Notes

Amplitude (A) | Frequency (f) | Periodic time (T) | Concepts of Data representation in Digital Computers | Data Representation in Electronic Circuits | Data Representation on Magnetic Media | Data Representation on Optical Media | Reason for Use of Binary System in Computers | Bits, Bytes, Nibble and Word | Bits | Byte | A Nibble | Word | Types of Data Representation | Number Systems and their Representation | Symbolic Representation Using Coding Schemes | Binary Arithmetic Operations | Representation of Signed Binary Numbers | Binary Addition | Binary Subtraction

DATA PROCESSING - Computer Studies Form 3 Notes

Data Processing Cycle | Data Collection | Data Input | Processing | Output | Description of Errors in Data Processing | Transcription Errors | Computational Errors | Algorithm or Logical Errors | Data Integrity | Accuracy | Timeliness | Relevance | Threat to Data Integrity | Data Processing Methods | Manual Data Processing | Mechanical Data Processing | Electronic Data Processing | Computer Files | Elements of a Computer File | Logical and Physical Files | Types of Computer Processing Files | Master File | Transaction (Movement) File | Reference File | Backup File | Report File | Sort File | File Organization Methods | Sequential File Organisation | Random or Direct File Organisation | Serial File Organisation | Indexed-sequential File Organisation Method | Electronic Data Processing Modes | On-line Processing | Real-time Processing | Distributed Data Processing | Time-sharing | Batch Processing | Multiprocessing | Multiprogramming | Interactive Processing

Elementary Programming Principles - Computer Studies Form 3 Notes

Computer Programming | Description of Terms used in Programming | Source Program | Object Code | Translators | Assembler | Interpreter | Compiler | Levels of Programming Languages | Low-Level Languages | High-level Languages | Advantages and Disadvantages of Low-level and High-level Languages | Advantages and Disadvantages of Low Level Languages | Advantages and Disadvantages of High Level Languages | Program Development | Problem Recognition | Problem Definition | Program Design | Program Coding | Program Testing and Debugging | Implementation and Maintenance | Development of Algorithms | Pseudocode | Program Flowcharts | Program Control Structures | Sequence | Selection | Iteration (Looping) | Designing More Complex Algorithms

System Development - Computer Studies Form 3 Notes

Definition of a System | Description of a System | Soft Systems | Hard Systems | Characteristics (Features) of a System | Open and Closed Systems | Information Systems | Definition of an Information System | Purposes of an Information System | System Analysis and Design | System Analysis | System Design | Information System Analyst | Theories of System Development | Traditional Approach | Rapid Application Development (RAD) | Structured Approach | System Development Life Cycle | Problem Recognition | Problem Definition (Problem Analysis) | Information Gathering (Fact-finding) | Requirements Specification | System Design | System Construction | System Testing | System Implementation | System Review | System Maintenance | System Documentation | Report on Fact-finding | Requirement Specification | System Flowchart | Table/file Structures Description | Sample Test Data | Output Reports | User Manual