Comp Sci Fundamentals

Computer

Programmable electronic device

Premodern Computer

Abacus (ancient calculator) Mechanical Calculator

First Generation

Vacuum Tubes

Second Generation

Transistors

Third Generation

Integrated circuits (microchips)

Third generation

PC

Fourth Generation

Graphical User interface

Fifth Generation

Cloud, internet and AI

Keyboard

Input

Printer

Output

Mouse

Input

Scanner

Input

Speaker

Output

Monitor

Output

CPU

the brain of the computer (interprets instruction)

RAM

Any information stored is lost when the computer is turned off

ROM

Permanent memory

ASCII code

Characters to binary

Smallest to largest

Petabyte-Exabyte-Zettabyte-Yottabyte

application software

Helps users perform specific tasks

Operation software

Manages computer hardware and software resources

Network

a collection of computers and devices connected together to share information and resources

Internet

Global network

World Wide Web

interconnected hypertext documents and multimedia content that are accessed vis the internet

World Wide Web

interconnected hypertext documents and multimedia content that are accessed vis the internet