computer Science and Information Technology

DAA

1. Computer Hardware vs Computer Software

2. What is a Computer? A computer is an electronic machine Designed to Satisfy the needs of User Input Device Storage Devices + Processing Unit Output Device

3. What is Hardware? The physical parts of the computer (things we can touch) 1 Input Devices Keyboard, Mouse, Scanner 2 Output Devices Monitor, Printer, Speakers 3 CPU Central Processing Unit → Brain of the computer 4 Storage Hard disk, Pen drive, CD/DVD

4. What is Software? Programs and instructions that run on hardware Cannot be touched, only used System Software Operating System (Windows, Linux) Application Software MS Word , Browsers Programming Languages Python, C, Java Software Set of Programs Program Set of Instructions Instructions What computer should do

5. Software Language Machine Level or Low Level Language – Binary Language (0 and 1) Assembly Level Language – Binary + English words High Level Language – Normal English

6. System Software Developed to Operate, Control and Extend the Processing Capabilities of Computer Itself. Used to manage Computer Hardware Acts as a bridge between hardware and user Examples: Windows (Computer) Android (Mobiles)

7. Application Software Programs designed for specific tasks Runs on top of system software MS Office Word, Excel, PowerPoint Design Tools AutoCAD, Photoshop Web Browsers Chrome, Firefox Games Entertainment software

8. Application Software vs System Software Application Software System Software Developed for Specific Task Developed for Hardware Handling High – Level Language Low Level Language Eg ) Browsers, Music Players Operating System(OS), Device Drivers, Language Processor

9. Hardware vs Software Hardware Software Physical parts of computer Set of instructions/programs Can be touched Cannot be touched Examples: CPU, Monitor, Keyboard Examples: Windows, MS Office, Python Without software → hardware is useless Without hardware → software cannot run

10. How Hardware and Software Work Together Input User gives input using hardware (keyboard/mouse) Processing Software processes the input (Set of Instructions) Output Result is shown through hardware (monitor/printer) Hardware + Software = Complete Computer

11. Conclusion Hardware = Body of the computer Software = Brain of the computer