DCA- Computer Fundamentals

Brief history of development of computer, computer system concepts, Basic component of computer, control unit, ALU, Input/output, semiconductor memory function and characteristics, Memory-RAM, ROM, EPROM, PROM and other types of memory, Capabilities and limitation, Generation of computers, Analog and Digital Hybrid Computers, General and Special of Computer, Types Of Computer –Micro, Mini, Mainframe, Supercomputers.

Input Devices: Keyboard, Mouse, Trackball, Joystick, Scanners, Digitizing tablet, Digital Camera, MICR, OCR, OMR, Light Pen, Barcode and Barcode Reader, Quick Response Code (QR Code), Voice Recognition, Touch Screen.

Storage Fundamentals – Primary Vs Secondary Data Storage and Retrieval Methods – Sequential, Direct and Index Sequential, Various Storage Devices – Magnetic Disks, Hard Disk Drives, Floppy, Disks, Zip Drive, Optical Disks.

Types of Software – System Software, Application Software, System Software – Operating System – definition and function, Device Drivers and Utilities Programs, Introduction and Features of DOS, Windows, Programming language, Machine, Assembly, High Level.

Types Of Network-LAN, WAN, MAN, Internet, VPN etc. Component of LAN-Media, NIC, NOS, Network device- Bridges, HUB, Routers, Repeater, Gateways Uses, advantages and disadvantages