This document provides an overview of computers, including their definition, generations, types, sizes, structures, hardware, software, and memory. A computer is an electronic device that accepts raw data as input and produces useful information as output using both hardware and software. It discusses the five generations of computers from vacuum tubes to modern devices incorporating artificial intelligence. The types of computers covered are analog, digital, and hybrid. The document also describes the structure of a basic computer and its main components.

1. COMPUTER BASICSJANGID M.L.GOVT.I.A.S.E.,BIKANER

2. COMPUTER ? COMPUTER IS AN ELECTRONIC DEVICE INCLUDING WITH HARDWARES & SOFTWARES, ACCEPT RAW DATA & PRODUCE USEFUL INFORMATION IN FORM OF DISPLAY,SOFT COPY( CD,FD),HARD COPY(PRINT),ACCUMALATION OF DATA (MEMORY), WITH PROCESS OF SYNTHESIS, MATHS-OPERATION etc WITH HELP OF THE PROPER COMMANDS OF USED SOFTWARES BY THE OPERATOR.

3. GENERATION FIRST ; 1945-59 : VACCUM TUBESECOND;1959-64 : DIODE & TRANSITORSTHIRD; 1964-75 : MSICFORTH; 1975 > : VLSICFIFTH; 1990 ONWORD : VLSIC+A.I

4. TYPESANALOGOUS COMPUTERDIGITAL COMPUTERHYBRID COMPUTER

5. DIGITAL COMPUTERS & SIZEMICRO COMPUTERMINI COMPUTERMAINFRAME COMPUTERSUPER COMPUTER

6. MICRO COMPUTERDESKTOP COMPUTERPERSONAL COMPUTERLAPTOPPALMTOPNOTEBOOKNETBOOKTABLET PC

7. STRUCTURE OF COMPUTER

8. C.P.U.

9. HARDWARESKEY BOARDMOUSECDDVDMICOCRMICRLCDCRTSPEAKERSCDPEN DRIVESCANNERPRINTER

10. SOFTWARES1. SYSTEM SOFTWARESOPERATING SYSTEMSCUI – UNIX,LINUX,DOSGUI – WINDOWS XP,7i; LINUX, MAC OS,2. APLICATION SOFTWARESOFFICE SUIT,TALLEY, CORAL DRAW ECT3. UTILITY SOFTWARESANTI VIRUSSYSTEM TOOLS

11. MEMORIESINTERNALSRAM, ROMCATCHEXTERNALSHARD DICSCDDVDPEN DRIVESSD CARD

12. THANKS !