1. স্বাগতম

2. Junior instructor(computer)

4. What is a computer? What is the weakness of computer?

5. Topic in the presentation is Block diagram of a computer

6. At the end of this session, the learner will be Able to: Draw and explain a block diagram of computer Identify input device Identify output device

7. Input Unite Arithmetic logic unit(ALU) CPU Output Unite MEMORY Block diagram of a computer

9. This is the process of entering data and programs in to the computer system.

10. Input device Mouse Scanner Keyboard

11. Webcam Microphone Joystick

12. CentralProcessingUnit: The control unit and ALU of the computer are together known as the Central Processing Unit (CPU).TheCPUis like brain performs the following functions

13. CPU Microprocessor

14. Storage Unit: The storage unit of the computer holds data and instructions that are entered through the input unit, before they are processed.

15. Harddisk RAM Portable harddisk

16. OutputUnit: The output unit of a computer provides the information and results of a computation to outside world. Printers, Visual Display Unit (VDU) are the commonly used output devices.

17. Output device Monitor Speaker Ploter

18. Printer Projector Line printer

19. 1.Is mouse a output device? 2.Write the abbreviation of ALU ?

20. 1.Draw a block diagram of a computer 2.List the name of input and output device of a desktop computer

21. Next Topics: Types of computer