Computer Systems Revision
- What is a computer system?
- Has a input, output, process and storage
- Input, output, process and storage
- Input
- Output
- Process
- Storage
- Input
- Input, output, process and storage
- A collection of software and hardware that work
together to achieve a set task
- Has a input, output, process and storage
- Professional standards
- Reliability
- Software standards
- How to allocate staff to teams
- How to keep track of changes
- How to code programs
- How to test
- How to document the whole system
- Benifits
- Efficency
- Any member of a software team can understand it without adapting to a new program
- Any member of a software team can understand it without adapting to a new program
- Fewer errors and debugging
- Standards result in more accurate coding
- Standards result in more accurate coding
- Easy to maintain
- Any programmer can find it relatively easy to look through the code and make changes
- Any programmer can find it relatively easy to look through the code and make changes
- Efficency
- How to allocate staff to teams
- Standards for coding programs
- Put comments in the code
- Variable names
- Naming convention
- Naming convention
- Formatting code
- Version names and numbers
- Put comments in the code
- Reliability
- Ethical, environmental and legal considerations
- Data protection act
- Rules
- The data must be accurate and up to date
- You have a right to see what data is held about you
- The data must be protected from unauthorised access
- The data must be accurate and up to date
- Personal data is held in hundreds of computers
- We would like to be confident that this data is accurate and held for a specific purpose
- A lot of this data is private and should not be available for anyone else to look at
- It should also be kept safe from people who want to use it for criminal purposes
- Rules
- Computer misuse act
- Rules
- Developers should not create any programs that help hackers
- Developers should not create any programs that help hackers
- Rules
- Data protection act
- Computer systems in the modern world
- Uses
- Retail
- Shops
- Schools
- Emergency Services
- Travel
- Politcs
- Retail
- Big part of everyone's daily life
- Mobile Phones
- GPS
- MP3 player
- PCs
- Digital Radio
- Mobile Phones
- Uses
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