Computer Essentials - Part 1 (IT Concepts).pptx

Computer Essentials - Part 1 (IT Concepts) ICDL

1. ICDL MODULE 1: Computer Essentials http://www.icdl.org

2. ICDL MODULE : Computer Essentials

3. ICDL MODULE 1: Computer Essentials http://www.icdlasia.org Section 1 :Computers and Devices What is ICT?

4. ICDL MODULE 1: Computer Essentials Section 1 :Computers and Devices different types of ICT services/uses like: Internet services, mobile technology, office productivity applications:

5. ICDL MODULE 1: Computer Essentials http://www.icdlasia.org Section 1 :Computers and Devices Internet Services for Consumers :

6. ICDL MODULE 1: Computer Essentials http://www.icdlasia.org Section 1 :Computers and Devices E-commerce: This refers to the buying and selling of products through an electronic system, such as the internet. Not all aspects of e-commerce are necessarily electronic, for example, after a customer makes a purchase, their item is shipped by post. E-Commerce is used by all types of businesses to sell all types of products, including clothing, toys, computers, electronic equipment, airline tickets, food, jewelry, books, and medicine.

7. ICDL MODULE 1: Computer Essentials Section 1 :Computers and Devices E-banking:

8. ICDL MODULE 1: Computer Essentials http://www.icdlasia.org Section 1 :Computers and Devices E-government: This is the electronic system that many local and state governments use to provide services to their citizens. E-Government enables citizens to register for access to public records, such as census information, government budgets, specific articles of legislation, etc. With e-government, it is possible to perform any number of functions related to government, such as file income tax returns, register to vote, change and update personal information (such as a postal address), apply for government benefits (like grants or scholarships), renew a driver’s license, and request and submit forms.

9. ICDL MODULE 1: Computer Essentials http://www.icdlasia.org Section 1 :Computers and Devices E-learning: This refers to the system of education that schools – typically third-level institutions such as universities – provide to registered users. E-Learning benefits its users through flexibility as there is no need for learners to go to a physical classroom. It is quite common for people to take e-learning courses from institutions in other countries. Teleworking: With the development of better telecommunications and better security software, many people now work from home. This is called teleworking and it is fast becoming a popular option with many organizations

10. ICDL MODULE 1: Computer Essentials http://www.icdlasia.org Section 1 :Computers and Devices A computer: Personal Computer:

11. ICDL MODULE 1: Computer Essentials http://www.icdlasia.org Section 1 :Computers and Devices Processing Carried out by CPU (Central Processing Unit) Calculations – addition, multiplication ... Logical – Program control, “If… then…” Control of memory, storage and peripheral devices Speed measured in Gigahertz (GHz)

12. ICDL MODULE 1: Computer Essentials http://www.icdlasia.org Section 1 :Computers and Devices Types of Memory – RAM Random Access Memory (RAM) Temporary Programs currently being used Data being processed Open documents, spreadsheets etc. Results etc. saved back to hard disk

13. ICDL MODULE 1: Computer Essentials http://www.icdlasia.org Section 1 :Computers and Devices Types of Memory – ROM Read-only Memory (ROM) Permanent “Bootstrap” routine used to start computer (NB. “Booting up”) Programs in specialist “embedded” systems eg. Washing machines, mobile phones

14. ICDL MODULE 1: Computer Essentials http://www.icdlasia.org Section 1 :Computers and Devices Memory and Storage Main processor (CPU) Memory (RAM) Backing Storage (Disk drive) Backup (eg. Tape) Temporary Permanent

15. ICDL MODULE 1: Computer Essentials http://www.icdlasia.org Section 1 :Computers and Devices Bigger bytes! Kilobyte (Kb) – 1024 bytes Megabyte (Mb) – 1024 Kb Gigabyte (Gb) – 1024 Mb Terabyte (Tb) – 1024 Gb What can you store?

16. ICDL MODULE 1: Computer Essentials http://www.icdlasia.org Section 1 :Computers and Devices Types of Storage Device Internal Hard disk drive – in a laptop is 500 GB and 1 TB to 3 TB for external hard disks and 1 to 3 TB for desktops Computer’s operating system Programs eg. Word, Excel Data – documents, spreadsheets, databases

17. ICDL MODULE 1: Computer Essentials http://www.icdlasia.org Section 1 :Computers and Devices Types of Storage Device Devices with removable media: Floppy disk – 1.44Mb 500+ page document, several photos CD – 740Mb. Many photos; large program suite DVD – 4,700Mb/4.7Gb. Full-length film ZIP disk – 100 or 200Mb. Used mainly for backup USB flash drives – They can hold from 1GB to 64 GB of information.. microSD card 2 GB to 32 GB

18. ICDL MODULE 1: Computer Essentials http://www.icdlasia.org Section 1 :Computers and Devices Input Devices Keyboard Mouse Scanner Microphone Digital camera Trackball Touchpad Light pen Joystick Output Devices Monitor Printer Speakers Earphones Input/Output Devices Touch screen Modem

19. ICDL MODULE 1: Computer Essentials http://www.icdlasia.org Section 1 :Computers and Devices Printers: Dot matrix printers Inkjet printers Laser printers

20. ICDL MODULE 1: Computer Essentials http://www.icdlasia.org Section 1 :Computers and Devices Input or output?

21. ICDL MODULE 1: Computer Essentials http://www.icdlasia.org Section 1 :Computers and Devices Input or output?

22. ICDL MODULE 1: Computer Essentials http://www.icdlasia.org Section 1 :Computers and Devices Docking station A docking station is a common addition for many laptops

23. ICDL MODULE 1: Computer Essentials http://www.icdlasia.org Section 1 :Computers and Devices common input/output ports Serial ports Parallel ports Network ports USB (Universal Serial Bus) High-Definition Multimedia Interface (or HDMI)

24. ICDL MODULE 1: Computer Essentials http://www.icdlasia.org Section 1 :Computers and Devices Types of programs An operating system, such as Windows,

25. ICDL MODULE 1: Computer Essentials http://www.icdlasia.org Section 1 :Computers and Devices Applications software is all the other software that runs on a computer. This is the software most users recognize as the applications with which they do their work .

26. ICDL MODULE 1: Computer Essentials http://www.icdlasia.org Section 1 :Computers and Devices

27. ICDL MODULE 1: Computer Essentials http://www.icdlasia.org Section 1 :Computers and Devices Thanks You