1. INTRODUCTION TO COMPUTER APPLICATIONS
Prof. A. Ramachandraiah
Department of Chemistry
National Institute of Technology Warangal

2. CHARACTERSTICS OF COMPUTERS
SPEED
ACCURACY
RELIABILITY
MEMORY CAPABILITY

3. HARDWARE: All electrically, electronically, mechanically LINKED parts and modules making the physical existence of a computer; hardware can be seen. Examples: Monitor, Keyboard, Mouse, Printer, CPU, etc.
SOFTWARE: All the instructions and programs which are written for hardware to work, are known as computer software. Software can NOT be seen. Examples: Operating System, ChemOffice, C++, HTML, Java, MSOFFICE, LINUX, GNU, etc.
LIVEWARE: All the human beings that are using the computer hardware and computer software are known as live ware. Examples: Programmers, Engineers, Students, Instructors, etc.

4. Input devices: Input devices are used to send the input to CPU
Input devices: Input devices are used to send the input to CPU. Eg: Keyboard, Mouse.
CPU: The full form of CPU is the Central Processing Unit. It is known as the brain of the computer.
Output devices: Output devices are used to take the output from CPU. Eg: Monitor, Printer.

5. THE GENERATIONS OF COMPUTERS

6. 1st Generation: – 54
Hardware: Vacuum Tube
Software Entry: Punched cards
Operating System: Machine Lang.
Size : Very Big
Cost : Very High
Processing Speed: Very Low

7. 2nd Generation: – 64
Hardware: 1955 – 64.
Software Entry: Magnetic Drum
Operating System: Assembly Lang.
Size : Big
Cost : High
Processing Speed: Low

8. 3rd Generation: – 74
Hardware: Integrated Circuits (IC)
Software Entry: Magnetic Tapes
Operating System: Prog. Lang.
Size : Medium
Cost : Medium
Processing Speed: Not Very Fast

9. 3rd Generation: – 74
Hardware: Integrated Circuits (IC)
Software Entry: Magnetic Tapes
Operating System: Prog. Lang.
Size : Medium
Cost : Medium
Processing Speed: Not Very Fast

10. 3rd Generation: – 74
Hardware: Integrated Circuits (IC)
Software Entry: Magnetic Tapes
Operating System: Prog. Lang.
Size : Medium
Cost : Medium
Processing Speed: Not Very Fast

11. 4th Generation: – 84
Hardware: VLSIC
Software Entry: Floppy Disks / Mag. Tapes
Operating System: Prog. Lang.
Size : Medium
Cost : Medium
Processing Speed: Fast

12. 5th Generation: 1985 - Present
Hardware: Micro processors and VLSIC
Software Entry: Hard Discs, CD-ROMS, etc
Operating System: Prog. Lang.
Size : Small
Cost : Affordable
Processing Speed: Very Fast

13. TYPES OF COMPUTERS
Super computers
Main frame computers
Mini computers
Micro (personal) computers
1. Desktop model
2. Notebook computers
3. Personal digital assistants

14. MONITOR
CPU
MOUSE
KEY BOARD

15. THE 10 MAIN ORGANS OF A TYPICAL PC
An exploded view of a modern personal computer:
Display
2. Motherboard
3. CPU (Microprocessor)
4. Primary storage (RAM)
5. Expansion cards (graphics cards, etc)
6. Power supply
7. Optical disc drive
8. Secondary storage (Hard disk)
9. Keyboard
10. Mouse

20. SWITCH MODE POWER SUPPLY

23. The Motherboard

31. DDR SDRAM (double data rate synchronous dynamic random access memory

44. COMPUTER APPLICATIONS FOR TEACHERS
IN EVERY ACTIVITY
OF TEACHING

45. MOST IMPORTANT AND SPECIFIC USES OF COMPUTERS BY A FACULTY MEMBER
TEXT DOCUMENTS with Objects Embedded
POWERPOINT Presentations
STRUCTURE and SHAPES DRAWINGS
SCHEMATICS FLOWCHARTS AND ASSEMBLAGE
DATABASES
CURVE FITTINGS AND REGRESSIONS
PLOTTING of Surfaces, Contours
DATA PROCESSING, ESTIMATES AND STOCHOSTICS
MODELING
STEREOVIEWS, IMAGE MORPHOLOGY AND ANALYSIS
NETWORKING and RESOURCE SHARING
INTERNET, SOCIAL MEDIA, COMMUNICATIONS
CYBERNETICS
ONLINE COURSES
WEB-HOSTING
MANY MANY CUSTOMISABLE APPLICATIONS