INTRODUCTION TO INFORMATION TECHNOLOGY- IT Basics
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INTRODUCTION TO INFORMATION TECHNOLOGY- IT Basics MOTHERBOARD CPU RAM & ROM SRAM DRAM Printer Keyboard Keyboard Modem Secondary Storage Devices
INTRODUCTION TO INFORMATION TECHNOLOGY- IT Basics
- 1. TRINITY INSTITUTE OF PROFESSIONAL STUDIES Sector 9, Dwarka Institutional Area, New Delhi-75 Affiliated to Institution of G.G.S.IP.U, Delhi IT Basics Keywords : Memory, CPU B.COM INTRODUCTION TO INFORMATION TECHNOLOGY BCOM 107
- 2. TRINITY INSTITUTE OF PROFESSIONAL STUDIES Sector 9, Dwarka Institutional Area, New Delhi-75 Computer Hardware Software Application Software System Software CPU Memory I/O Etc.
- 3. TRINITY INSTITUTE OF PROFESSIONAL STUDIES Sector 9, Dwarka Institutional Area, New Delhi-75 Fig: Computer
- 4. TRINITY INSTITUTE OF PROFESSIONAL STUDIES Sector 9, Dwarka Institutional Area, New Delhi-75 MOTHERBOARD
- 5. TRINITY INSTITUTE OF PROFESSIONAL STUDIES Sector 9, Dwarka Institutional Area, New Delhi-75 CPU
- 7. TRINITY INSTITUTE OF PROFESSIONAL STUDIES Sector 9, Dwarka Institutional Area, New Delhi-75 Affiliated to Institution of G.G.S.IP.U, Delhi RAM & ROM
- 8. TRINITY INSTITUTE OF PROFESSIONAL STUDIES Sector 9, Dwarka Institutional Area, New Delhi-75 SRAM
- 9. TRINITY INSTITUTE OF PROFESSIONAL STUDIES Sector 9, Dwarka Institutional Area, New Delhi-75 DRAM
- 10. TRINITY INSTITUTE OF PROFESSIONAL STUDIES Sector 9, Dwarka Institutional Area, New Delhi-75 Ports CPU RAM Disk controller Graphics card Sound card Network card Printer Mouse Keyboard Modem Monitor Speakers bus Computer Fig: Schematic Diagram of a Personal Computer...
- 11. TRINITY INSTITUTE OF PROFESSIONAL STUDIES Sector 9, Dwarka Institutional Area, New Delhi-75 Secondary Storage Stores information Non-volatile, permanent storage Characteristics Media Capacity Access time
- 12. TRINITY INSTITUTE OF PROFESSIONAL STUDIES Sector 9, Dwarka Institutional Area, New Delhi-75 Secondary Storage Devices Two major types of secondary storage device 1. Serial Devices Magnetic tapes (very fast sequential access) 2.Direct Access Storage Devices (DASDs) Magnetic Discs Hard disks (high capacity, low cost, fast) Floppy disks (low capacity, lower cost, slow) Optical Disks CD-ROM = (Compact disc, read-only memory
- 13. TRINITY INSTITUTE OF PROFESSIONAL STUDIES Sector 9, Dwarka Institutional Area, New Delhi-75 Limitation of Secondary Devices
- 14. TRINITY INSTITUTE OF PROFESSIONAL STUDIES Sector 9, Dwarka Institutional Area, New Delhi-75 Magnetic Tape Sequential access Commonly used for backing-up data Very large capacity Types of magnetic tape Tape cartridges Magnetic tape reels
- 15. TRINITY INSTITUTE OF PROFESSIONAL STUDIES Sector 9, Dwarka Institutional Area, New Delhi-75 Magnetic Tape
- 16. TRINITY INSTITUTE OF PROFESSIONAL STUDIES Sector 9, Dwarka Institutional Area, New Delhi-75 Magnetic Tape Plastic ribbon 1/2 inch or 村 inch wide 50 to 2400 feet long Coated with magnetic material such as iron oxide or chromium dioxide. Data stored in form of tiny magnetized(1) or non magnetized spots(0) Can be erased and reused in definitely Information can be read many times without affecting data
- 17. Magnetic Tape What is magnetic tape? Thin layer of material capable of storing a magnetic signal Usually contains Iron Oxide Protected by backing layer called the Substrate
- 18. Examples of Magnetic Media Some you are probably familiar with: Cassette tapes VHS video tape Computer Tape 8-track DAT
- 19. Magnetic Tape Types Tape cartridges Backup tape for microcomputer Capacities range from 120 MB to 5 GB Digital audio tape (DAT) Tape reels Minicomputer and mainframe 1/2 inch wide and 1/2 mile long Stores 1600 to 6400 cpi