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Information and Communication Technology: Introductory Concept

Sayed Ahmed Computer Engineering, BUET MSc. Computer Science, Canada President/Chief Architect/Lead Developer Justetc (Just et cetera) Technologies http://www.justetc.net http://sayed.justetc.net sayed@justetc.net. Information and Communication Technology: Introductory Concept. Address.

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Information and Communication Technology: Introductory Concept

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  1. Sayed Ahmed Computer Engineering, BUET MSc. Computer Science, Canada President/Chief Architect/Lead Developer Justetc (Just et cetera) Technologies http://www.justetc.net http://sayed.justetc.net sayed@justetc.net Information and Communication Technology: Introductory Concept

  2. Address • Canada Address • Trudelle Street • Toronto, Ontario, Canada • Contact • Sayed Ahmed • sayed@justetc.com • Bangladesh Address • Justetc Computers • Habib Complex (2nd Floor) • Shimultuly, Gazipur, Dhaka • Bangladesh • Contact • Rafiqul Islam • rafik@justetc.com • 01942747702 Just Etc Technologies, sayed@justetc.net

  3. Training and Education by Justetc • Training and Education in Bangla: Bangla.SaLearningSchool.com • Training and Education in English: www.SaLearningSchool.com • Training and Education in English: English.SaLearningSchool.com • Ask a question and get answers : Ask.JustEtc.net • Offline IT Training: University.JustEtc.net

  4. Information Technology • What is Information Technology • Concerned with • Collection, dissemination, processing, and storage of • Information esp. with the use of computers • Design, development, implementation, support, management of • Information Systems – computer based

  5. Communication Technology • Technologies related to data communications • Data Communication • Carry data from one place to another or one device to another • Examples • Telephone • Mobile • Internet

  6. IT and CT (Communications Tech) • IT + CT = ICT • IT in a broader term includes both • IT • CT • IT now also refers to ICT

  7. Types of ICT • Computing and Information Systems • Electronic Data Processing, Artificial Intelligence, Expert Systems • Broadcasting • Radio and Television • Telecommunications • Fixed line telephones, mobile phones • The Internet • Uses telecommunications infrastructure

  8. Progress of ICT Adoption • Basic Communication • Fixed phone, mobile, fax, radio, television • Basic Information Technology • Uses basic software and printers • Used in basic everyday needs • Advanced Communications • Email, Internet Browsing, Video Conferencing, ecommerce, VOIP • Advanced IT • Advanced software are used for complex needs • DBMS, Information Systems, Enterprise Resource Planning, Inventory Management

  9. Elements of ICT • Computer • Central tool • Radio • Television • Internet

  10. Radio • Radio: Sound wave to Electro Magnetic Wave • FM broad cast: 87.5 to 108.0 MHz • AM broadcast • Microwave broadcast • http://ptolemy.eecs.berkeley.edu/eecs20/sidebars/radio/spectrum.gif

  11. Television • Television • NTSC • PAL • Used in Bangladesh • SECAM • HDTV

  12. What is the Internet? • The Internet • The largest computer network in the world • Consists of many interconnected network of • Small sizes • Large sizes • Has more than 100 Crore computers • Internet History • ARPANET • 1969: USA military interconnected four university computers in a network called ARPANET • 1982: TCP/IP got invented. In 1983, ARPANET started to use TCP/IP protocol

  13. Internet • Expansion of the Internet • 1969 to 1983: • Experimental stage • Slow expansion • Covered 20 countries • Around 200 computers got connected • 80s: • NSFNET was established on 1986 • Active research started on the Internet Technologies • ARPANET was closed on 1990, and got named as the Internet • ISPs were created on 1989 • So everyone got the opportunity to get connected to the Internet • ISOC (Internet Society) was established on 1992 • Now, you can connect to the Internet using cell phones

  14. Thanks Post your questions at http://ask.justetc.net

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