Grade 12 Physics Notes

Grade 10 Computer Science Notes

1. Introduction to Computer Science

● Definition: Computer science is the study of computers and computational systems. It
involves understanding algorithms, programming languages, data structures, and the
impact of computing on society.

2. Basics of Computing

● Components of a Computer System:
○ Hardware: Physical components of a computer system (e.g., CPU, memory,
storage devices).
○ Software: Programs and applications that run on a computer system.
● Input, Processing, Output (IPO) Model:
○ Input: Data entered into the computer system (e.g., keyboard input).
○ Processing: Manipulation and calculation of data by the CPU.
○ Output: Results produced by the computer system (e.g., displayed on screen,
printed).

3. Programming Concepts

● Algorithms:
○ Definition: A sequence of steps or instructions to solve a problem or perform a
task.
○ Example: Algorithm for finding the maximum number in an array.
● Programming Languages:
○ Definition: Formal languages used to write instructions that a computer can
execute.
○ Examples: Java, Python, C++, JavaScript.
● Pseudocode:
○ Definition: A high-level description of a computer program or algorithm, using
structured English and informal syntax.

Example:
Python

Set sum to 0
For each number in list:
Add number to sum
Print sum

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