THE education site for computer science and ICT
International GCSE Computer Science topics
Teachers: We are here to provide support material for you.
As a teacher this section provides you with the material and resources needed to deliver each specific topic within your international syllabus (e.g. Cambridge, Edexcel and AQA - see wikipedia IGCSE entry). We include starters, plenaries, lesson tasks, offline theory notes etc.
As a student - each topic is explained for you in detail including online theory notes, videos and revision.
Data Representation
- Number systems
- Digit position
- Converting between binary/denary
- Adding binary
- Binary shift
- Binary overflow
- Bit, nibble, byte
- Kilobyte, megabyte
- Terabyte, petabyte
- Hex symbols
- Converting between binary/hexadecimal
- Converting between denary / hexadecimal
- In HTML colour
- In MAC addresses
- In machine code
- In Assembly language
- Registers
- Binary and registers
- Instruments
- Robots
Data storage
- ASCII
- Character sets
- Unicode
- Storing pixels
- Meta data
- Quality of image
- Size of image file
- What is sound
- Sample rate
- Bit depth
- Size of sound file
- Lossy compression
- Lossless compression
- Document formats - txt, docx, pdf
- Image formats - gif, png, tiff, jpg
- Video formats - mpeg4
- Audio formats mp3
- Checksum
- Parity bit
- ARQ
- Check digits
- Error correction
Communication and Internet technologies
- Bit rate
- Serial and parallel
- Simplex, duplex, half duplex
- Malware
- Social engineering,phishing
- Brute force attack
- Denial of Service
- Data interception
- SQL injection
- Penetration testing
- Anti-malware software
- Firewalls
- User-access rights
- Passwords
- Encryption
- Physical security
- ISP
- URL
- DNS
- Web site
- Hosting
- Cloud
- IP4 address
- IP6 address
- Networks
- MAC address
- HTTP and HTTPS
- HTML markup
- CSS markup
- Cookies
- URL