OCR A Level Computer Science (H446) - Component 1.2.2 - Application Generation

Application Software is...

• software designed for a specific task

• software designed for general use

• software such as Steam, Word and PowerPoint

• software such as WinZIP, Norton AntiVirus and Windows Defender

Utility Software is...

• software designed for a specific task

• software designed for general use

• software such as Steam, Word and PowerPoint

• software such as WinZIP, Norton AntiVirus and Windows Defender

Open Source software is...

• Always bug free

• Usually well documented

• Fully editable

• Free to use

• Definitely suitable for use by a large organisation

Closed Source software is...

• Always bug free

• Sometimes very expensive

• Generally well-tested

• A good choice for large organisations

• Usually well-supported by the developer

Converts high-level code to low-level:

• Interpreter

• Compiler

• Assembler

Creates an executable file

• Interpreter

• Compiler

• Assembler

Must be installed for the code to run on another machine

• Interpreter

• Compiler

• Assembler

Converts low level code to machine code

• Interpreter

• Compiler

• Assembler

Provides quicker debugging

• Interpreter

• Compiler

Does not provide the source code to the user

• Interpreter

• Compiler