GCSE & IGCSE Computer Science

TOPIC 1 | DATA REPRESENTATION

1.1 NUMBER SYSTEMS

• 1.1.1 WHY COMPUTERS USE BINARY
• 1.1.2 BINARY, HEX AND CONVERSIONS
• 1.1.3 BENEFITS OF HEX
• 1.1.4 BINARY ADDITION AND OVERFLOW
• 1.1.5 BINARY SHIFTS
• 1.1.6 NEGATIVE NUMBERS AND TWO’S COMPLEMENT

1.2 TEXT, SOUND AND IMAGES

• 1.2.1 REPRESENTING TEXT
• 1.2.2 REPRESENTING SOUND
• 1.2.3 REPRESENTING IMAGES

1.3 DATA STORAGE AND COMPRESSION

• 1.3.1 MEASURING STORAGE
• 1.3.2 CALCULATING IMAGE AND SOUND FILE SIZE
• 1.3.3 PURPOSE OF COMPRESSION
• 1.3.4 LOSSY AND LOSSLESS COMPRESSION

TOPIC 2 | DATA TRANSMISSION

2.1 TYPES AND METHODS OF DATA TRANSMISSION

• 2.1.1 DATA PACKETS
• 2.1.2 SERIAL, PARALLEL, SIMPLEX AND DUPLEX
• 2.1.3 UNIVERSAL SERIAL BUS

2.2 METHODS OF ERROR DETECTION

• PARITY, CHECKSUM, CHECK DIGIT AND ARQ

2.3 ENCRYPTION

• SYMMETRIC AND ASYMMETRIC ENCRYPTION

TOPIC 3 | HARDWARE

3.1 COMPUTER ARCHITECTURE

• 3.1.1 ROLE OF THE CPU
• 3.1.2 COMPONENTS OF THE CPU
• 3.1.3 CORES, CACHE AND CLOCK SPEED
• 3.1.4 INSTRUCTION SET
• 3.1.5 EMBEDDED SYSTEMS

3.2 INPUT AND OUTPUT DEVICES

• 3.2.1 INPUT DEVICES
• 3.2.2 OUTPUT DEVICES
• 3.2.3 SENSORS

3.3 DATA STORAGE

• PRIMARY, SECONDARY AND CLOUD STORAGE

3.4 NETWORK HARDWARE

• NETWORK INTERFACE CARDS, ADDRESSES AND ROUTERS

TOPIC 4 | SOFTWARE

4.1 TYPES OF SOFTWARE AND INTERRUPTS

• 4.1.1 SYSTEM AND APPLICATION SOFTWARE
• 4.1.2 OPERATING SYSTEMS
• 4.1.3 FIRMWARE AND BOOTLOADER
• 4.1.4 INTERRUPTS

4.2 LANGUAGES, TRANSLATORS AND IDES

• 4.2.1 HIGH AND LOW LEVEL LANGUAGES
• 4.2.2 ASSEMBLY AND MACHINE CODE
• 4.2.3–4 COMPILER AND INTERPRETER
• 4.2.5 INTEGRATED DEVELOPMENT ENVIRONMENT

TOPIC 5 | THE INTERNET AND ITS USES

5.1 INTERNET AND WORLD WIDE WEB

• 5.1.1–3 INTERNET AND THE WEB
• 5.1.4 WEB BROWSERS
• 5.1.5 WEB PROTOCOLS
• 5.1.6 COOKIES AND SESSIONS

5.2 DIGITAL CURRENCY

• 5.2.1–2 DIGITAL CURRENCY

5.3 CYBER SECURITY

• 5.3.1 CYBER SECURITY
• 5.3.2 KEEPING DATA SAFE

TOPIC 6 | AUTOMATED AND EMERGING TECHNOLOGIES

6.1 AUTOMATED SYSTEMS

• 6.1.1 SENSORS, MICROPROCESSORS AND ACTUATORS
• 6.1.2 AUTOMATED SYSTEMS IN ACTION

6.2 ROBOTICS

• 6.2.1 ROBOTICS
• 6.2.2 CHARACTERISTICS OF A ROBOT
• 6.2.3 ROBOT ROLES

6.3 ARTIFICIAL INTELLIGENCE

• 6.3.1 WHAT IS AI?
• 6.3.2 CHARACTERISTICS OF AI
• 6.3.3 OPERATIONS AND CONTROLS OF AI

TOPIC 7 | ALGORITHM DESIGN AND PROBLEM-SOLVING

Lessons coming soon.

TOPIC 8 | PROGRAMMING

8.1 PROGRAMMING CONCEPTS

• PROGRAMMING CONCEPTS
• PROGRAMMING CONCEPTS CONTINUED

8.2 ARRAYS

• ONE AND TWO DIMENSIONAL ARRAYS

8.3 FILE HANDLING

• READING AND WRITING FILES

TOPIC 9 | DATABASES

9 DATABASES

• 9.1 DEFINING A DATABASE
• 9.2 DATA TYPES
• 9.3 PRIMARY KEYS
• 9.4 SQL

TOPIC 10 | BOOLEAN LOGIC

10 BOOLEAN LOGIC

• LOGIC SYMBOLS AND FUNCTIONS
• USING LOGIC GATES