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Chapter 2

Chapter 2. Computer Technology. Computer ?. an automatic electronic working as intelligence to solve both simple and complex problems via mathematical methods. It differs from other calculators. Why it not calculator ? Outstanding features of computer. Self Acting Speed

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Chapter 2

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  1. Chapter 2 ComputerTechnology

  2. Computer ? an automatic electronic working as intelligence to solve both simple and complex problems via mathematical methods. It differs from other calculators.

  3. Why it not calculator?Outstanding features of computer • Self Acting • Speed • Storage • Reliability

  4. Why it not calculator? • Accuracy • Repeatability • Communication

  5. Type of computers • Super computer • Mainframe computer • Mini computer • Micro computer

  6. Super Computer

  7. Mainframe Computer

  8. Mini Computer

  9. Micro Computer • Desktop • with case • All-in-one

  10. Laptop • Notebook / Ultra book • Netbook • Tablet

  11. Function of Computer • Input Unit – receives data/information from outside • Processing Unit – be processed as ordered • Memory Unit – be stored data in main memory and secondary memory • Output Unit – display to use • Communication Unit – be connected to a network

  12. Principle of Computer Processing Secondary memory Central Processing Unit (CPU) Input data Output unit Main memory Control unit (CU) Arithmetic and Logic unit (ALU)

  13. ComputerTechnology Element

  14. Hardware • Commu-nication

  15. Input Unit .. is devices used for receive data (text, sound, picture or multimedia) into computer

  16. Type of Input Unit • Receive orders from user

  17. 2. Receive picture

  18. 3. recognition device :Barcode, OMR, QR code, RFID, etc.

  19. Processing Unit a piece of hardware that carries out the instructions of a computer program. It performs basic arithmetical, logical, and input/output operations of a computer system.

  20. Memory Unit • Main Memory Unit • Secondary Memory Unit … is the part of the computer that holds data and instructions for processing.

  21. Main Memory Unit There are two types of computer memory inside the computer, ๐ ROM (Read Only Memory) ๐ RAM (Random Access Memory)

  22. ROM(read only memory) is used for storing special sets of instructions which the computer needs when it starts up. When we switch the computer off, the contents of the ROM does not become erased but remains stored permanently.

  23. ROM(Read Only Memory)

  24. RAM(Random Access Memory)is really the main store and is the place where the programs and software we load gets stored. When we switch a computer off, whatever is stored in the RAM gets erased.

  25. RAM(Random Access Memory)

  26. Secondary Memory Unit DVD CD Hard disk Blu-ray

  27. Thumb drive Memory card

  28. Output Unit is any device used to send data from a computer to another device or user.

  29. Monitor • CRT • LCD • LED

  30. Speaker

  31. Printer • Dot-metrix • Ink Printer • Laser Printer • Plotter

  32. Communication Unit is a device allows one computer connected with another devices or another computers. such as: USB, VGA, HDMI, Bluetooth,NFC (Near Field Communication)

  33. Software is a program that tells a computer what to do. There are two main types of computer software: System SW and Application SW.

  34. Type of com. Software • System software - is used just to run the hardware. Or it was called Operating System (OS)

  35. Computer OS

  36. 2. Application SW - is designed to be employed by end users to accomplish specific tasks.

  37. Application SW

  38. Trend of Software usage in the future • SW was used by Smart phone andTablet. • The way of SW download is Application store. • SW storage into Cloud computing.

  39. Question???

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