Computer
Appreciation and Applications
Book Title: Computer Science – C S French, 5th Edition (Continuum)
THE TOPICS YOU HAVE TO COVER
Syllabus
Hardware and data:
Clear Distinction Between Data and Program, Data and Options/Parameters, Programmer and User
General Configuration of a Computer and Components of the CPU (ALU, memory, control)
Directions of Data Flow
Types of Memory (ROM, RAM, cache, video)
Features of a Modern PC
Input Devices - General Survey with Emphasis on Use Rather than How the Device Works - OCR, OMR, MICR Devices, Bar Code Reader, Types of Keyboards, Optical Scanner, Digitiser, Voice Input Device, ATM, Touch Screen, Mouse
Distinction between Uses of Keyboard and Mouse
Output Devices - Range of Current Printer Types (laser, dot matrix, ink jet etc.) - Relative Speeds/Costs/Quality VDU, Plotters, Microfilm
For a Given Application, Select the Most Appropriate Input/Output Devices or Method of Data Capture
Data Validation - Definition and Purpose
Identify Validation Possible with Particular Data
Check Digits
Data Types - Integer, Decimal, Text/Character, Logical, Date, Currency etc.
The Need to Define Data by Type
Business Applications:
Accounts
The Component Parts of an Accounts Package
Typical Input and Output Documents
Stock Control
Its Purpose
Typical Input and Output Data
Contents of the Stock File
Sales
Concept of Customer, Sales Orders, Purchase Orders and Supplier Files (and stock file)
Contents of these Files
Concept of Cross-referencing (customer number linking sales order with customer file)
General Appreciation of Who Would Supply Input Data and Use Output Data and Why (e.g. stores clerk would use a re-order list to place orders with suppliers for restocking)
Files and File Access:
Magnetic and Optical Storage Devices and Media
Their Limitations
Definitions of File, Record and Field
Examples Taken From Particular Situations
File Organisation Defined as Organisation of Records on a File
Consideration of Serial, Sequential and Indexed Sequential Organisation
The Stages of Accessing a Particular Record from Serial, Sequential or Indexed Sequential Files
Contents of a Particular File - Fields, Data Types, Sizes, Purpose of Being on the File
Concept of Master and Transaction File
System Diagram for a General Update of a Master File Using a Transaction File
Security of Data Files
Backups, Environmental Conditions, Restricted Access, Administrative Controls
Distinction Between Different Types of Files - Program, Data, Text, Parameter Files
Software:
The Role of the Operating System in Controlling the Computer
Basic Features of an Operating System (command or GUI)
Distinction between General Purpose Software (e.g. database) and Special Purpose Software (e.g. payroll)
Examples of Special Purpose Packages
Word Processing
Options Available
How to Use Them (in general terms)
Margins, Fonts, Special Effects (underline/centre/bold etc.), Spell Check, Grammar Check
Standard Phrases
Inclusion of Graphics
Databases
How to Create a New File, Add Records, Edit Records, Delete Records, Selective Search by Particular Criteria, Rearrange Data, Produce Reports
Spreadsheets
Formatting a Model (decimal places, alignment, extra rows/columns etc.)
Adding Simple Formulae
Simple Functions such as Sum/Average
Replicating a Formula
Absolute and Relative Addresses
Graphics
Features Available in Graphics/Drawing/CAD Package
Standard Shapes
Moving, Enlarging, Rotating, Stretching, Colouring, Hatching, Dimensioning, Layering
Systems and Programming:
Brief Review of System Life Cycle
Methods of Fact Finding
An Overview of the Role of the Analyst - to Investigate, Design and Supervise Installation of a New System
An Overview of the Role of the Programmer - to Convert a Systems Specification into a Program by Devising a Logical Structure, Coding into a Language, Testing and Documenting
Distinction between Development Programmer and Maintenance Programmer
Distinction between High and Low Level Languages
Brief Survey of Common High Level Languages and Typical Uses
People, Computers and Society:
Brief Overview of Tasks Performed by Computing Personnel - Data Processing Manager, Systems Analyst, Programmer, Ancillary Staff/Data Input Clerks
Social Effects of Computers - Changes in Lifestyle, Changes at Work, Need for Training, Crime and Crime Prevention, Data Protection Acts Treated in Outline
Communications:
Spread of Networks - Reasons and Advantages
Data Transmission
Differences Between LAN and WAN
Electronic Mail Using a Provider’s Central System
Outline of Internet Features
