Computer Class 9 Chapter 1 – Computer Systems & Logic: Review, Theory of systems (Objectives and components), Environment and communication of a system, Software. Free Punjab Board video lectures.
Review
Theory of systems
Objectives and components
Environment and communication of a system
Software
Architecture of Von Neumann computers
Working of Von Neumann architecture
Number systems
Number system conversions
Data representation in computer
Whole numbers and integers
Binary arithmetic operations
Common text encoding schemes
ASCII Unicode
Digital systems and logic design
ADC · DAC
Boolean algebra and logic gates
Construction of Boolean functions
Logic gates and their functions
Simplification of Boolean functions
Boolean algebra rules
Creating logic diagrams
Half adder · Full adder