UNIT-I: INTRODUCTION TO COMPUTERS: Introduction, Definition,Characteristics of computer,Evolution of Computer,Block Diagram Of a computer,Generations of Computer, Classification Of Computers,Applications of Capabilities and limitations of computer. Computer,Role of I/O devices in a computer system.Input Units:Keyboard, Terminals and its types. Pointing Devices, Scanners and its types, Voice Recognition Systems, Vision Input System,Touch Screen,Output Units: Monitors and its types.Printers: Impact Printers and its types.Non-Impact Printers and its types, Plotters, types of plotters, Sound cards,Speakers.

UNIT -II: COMPUTER ARITHMETIC & STORAGE FUNDAMENTALS Binary, Binary Arithmetic, Number System: Positional & Non Positional,Binary,Octal, Decimal,Hexadecimal, Converting from one number system to another.Primary VsSecondary Storage,Data storage & retrieval methods.Primary Storage: RAM ROM, PROM, EPROM, EEPROM. Secondary Storage: Magnetic Tapes,Magnetic Disks. Cartridge tape,hard disks,Floppy disks Optical Disks,Compact Disks,Zip Drive, Flash Drives.

UNIT-III: SOFTWARE: Software and its needs, Types of S/W.System Software: Operating System, Utility Programming Language: Machine Language,Assembly Language, High Level advantages & disadvantages. Application S/W and its types: Word Processing, Spread Sheets Language their Programs Presentation,Graphics,DBMS s/w.

UNIT-IV:OPERATING SYSTEM: Functions,Measuring System Performance,Assemblers,Compilers and Interpreters.Batch Processing, Multiprogramming,Multi Tasking,Multiprocessing,Time Sharing, DOS,Windows, Unix/Linux.

UNIT-V: DATA COMMUNICATION:Data, Communication, Basic Networking Devices, Communication Process, Data Transmissionspeed, Communication Types(modes),Data Transmission Medias,Modem and its working,characteristics,Typesof Networks,LAN Topologies, Computer Protocols, Concepts relating to networking