hardware components LM35: - Analog sensor - Outputs voltage proportional to temperature - Simple and linear output DHT11: - Digital sensor - Measures both temperature and humidity - Useful for weather stations

1. CLASS 7
CH. COMPUTER HARDWARE COMPONENTS

2. Hardware components are those which we can
touch and see.
They are divided into two types:
 External devices
 Internal devices

3. External Devices or computer peripherals are further
divided into:
 Input peripherals (The devices use to enter data into
the computer).
 Output peripherals (The devices used to view the
result).
 Storage peripherals (The devices used for storing
data).

4. Input Peripherals are the devices which are used to enter data
into the computer.
1. Keyboard
2. Mouse
3. Microphone
4. Joystick
5. Scanner
6. Barcode Reader
7. OMR Reader
8. OCR Reader
9. MICR Reader
10.Web Camera

5. Dvorak Keyboard

7. QWERTY Keyboard

8. Ball / Mechanical Mouse

9. Optical Mouse

10. Wireless Mouse

11. Trackball Mouse

12. Touchpad

13. Touchscreen

14. Microphones

15. Joysticks

16. Scanner

17. Barcode Reader

18. Optical Mark Recognition (OMR) Reader

19. Optical Character Recognition (OCR) Reader

20. Magnetic Ink Character Recognition (MICR) Reader

21. Web Camera

22. Output Peripherals are the devices that are used to display the
processed result.
1. Monitor
2. Printer
3. Plotter

23. Cathode Ray Tube ( CRT Monitor )

24. Liquid Crystal Display ( LCD Monitor )

25. Dot matrix printer

26. Daisy wheel Printer

27. Line Printer

29. Ink jet Printer

30. Plotter

31. Hard Drive

32. Compact Disk
Pen Drive

33. Memory Card

34. Internal Hardware
The devices which are inside the Cabinet.

35. CPU Cabinet

36. Motherboard

38. Random Access Memory
RAM

41. Computer Bus

42. Serial Port

43. Universal Serial Bus (USB) Port