Software - computer systems
- Created by: Georgina
- Created on: 13-02-15 11:54
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- Computer Software
- Definition
- (both system and application)
- give instructions that tells the hardware exactly what tasks are performed and in what order
- (both system and application)
- Components
- Software contains programs that tell the computer what to do
- Two categories:
- System Software
- also known as an Operating System
- manages the computer
- It is an essential part
- Examples:
- Windows, Linus, MAC OS
- also known as an Operating System
- Application software
- perform specific tasks
- Examples:
- Microsoft Word
- Internet Explorer
- System Software
- Software Programming
- Software Programming
- Written in high level language
- E.G. C/C++/C# /Java
- Has to be translated to machine instruction
- Compilers
- translate the high level language to machine code
- Before high level language
- Used assembly code
- assembly code corresponds to machine instruction
- which is binary code with info. of operation, operand and addressing mode
- To write assembly code :
- programmer needs to know how many register there is in the CPU + memory space + detailed data structured manipulated in the machine
- assembly code corresponds to machine instruction
- Used assembly code
- Written in high level language
- Software Programming
- Definition
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