WHAT IS COMPUTER SCIENCE?

1. COMPUTING SYSTEM All the basic hardware (the parts you can see and touch) and software (the programs) that work together to make a computer run.

2. A computer is a device that stores and processes (changes, moves, or rewrites) information. It can perform complicated computations and organize and store huge amounts of information. Computer science is the study of computers and how computer technology can be used to solve problems.

2.1. PROGRAM

3. A list of steps or instructions written in human language that tells a person how to complete a task.

4. A set of instructions (or an algorithm) that has been translated into commands a computer can understand (code).

5. ALGORITHM

6. For example: * Computers helped navigate spacecraft to the moon and Mars. * Robots help surgeons perform surgeries with great precision. * Computers add realistic visual and sound effects to movies and video games.

7. COMPUTER SCIENCE IS

7.1. creating a phone app (application or program) that allows friends to share funny cat videos with each other. programming your own video game.

8. COMPUTER SCIENCE IS NOT

8.1. watching videos on the internet of cats riding tricycles. playing your favorite video game.

9. Computing Systems

9.1. Computing systems are the machines that run programs and process information. Examples are desktop computers, laptops, and phones. Many electronic devices are run by PROGRAMS and have small built-in computers. For example, dishwashers, TVs, smart watches, and even some light bulbs.

10. 2. Algorithms and Programming

10.1. ALGORITHMS and programming involve writing the programs (code) that tell computers what to do. Programs can be very complex -like iTunes, Safari, Chrome, or Roblox - following many different instructions.