The IT Environment Section 5 ICA11v1.0 Vocational Education and Training Training Toolbox Series ICA11v1.0 Information, Digital Media & Technology Cert I, II and III The IT Environment Section 5

The IT Environment IT Infrastructure

Table of Contents The IT Environment Section 5 – IT Infrastructure Hardware Slide - 04 Input Slide - 05 Processing Slide - 06 Output Slide - 07 Secondary Storage Slide - 08 The Conceptual Computer Package Slide - 09 Software Slide - 10 Operating System Software Slide - 11 Application Software Slide - 12 Programs and Programming Slide - 13 Organisational Computing Slide - 14

Hardware The IT Environment The main categories of computer hardware are: Mainframe computers Personal Computers Minicomputers Personal Digital Assistants (PDAs)

Input The IT Environment Common input devices for a computer are: Keyboard Mouse Microphones Scanners Digital cameras Bar code reader EFTPOS device Touch screens

Processing The IT Environment Processing is accomplished inside a computer using two types of ‘chips’: Processing chips Memory chips

Output The IT Environment The three common output devices are: Monitors Printers Speakers

Secondary Storage The IT Environment The secondary storage is used by the computer internal memory to access stored data, information or instructions whenever necessary. Some forms of secondary storage are: USB Memory Stick Optical disk Magnetic floppy disk (soon to be extinct) Zip or tape drives Removable hard disk

The Conceptual Computer Package The IT Environment The Conceptual Computer Package Input Device Internal Memory CPU Storage Devices Output

Software The IT Environment There are two basic types of software: Operating system software Application software Application Software Operating System Hardware

Operating System Software The IT Environment Operating System Software Some of the tasks that operating systems software performs include: Starting application software Supervises multiple applications running at the same time Manages the storage of programs, data and information Manages the various input and output devises Transfer of data, programs and information Allocates memory and processing time Provides basic security for users and to the system as a whole

Application Software The IT Environment There are two types of application software: Off the shelf applications Custom applications

Programs and Programming The IT Environment Programs and Programming The more common computer languages are: COBOL ForTran VB.NET C++ Java Also know as Visual Basic and primarily used for writing PC software Pronounced CEE Plus Plus and is used to write software for network servers and PCs Used for business software usually for mainframes Used for writing scientific and engineering software Network software and all other types of computers

Organisational Computing The IT Environment Organisational Computing The three main types of computing that now exist today are: Mainframe systems PCs connected via a LAN Client/server systems

The IT Environment End of Section 5