Introduction to computer hardware

1. Hardware of Personal Computers Lesson 2

2. Part 1: Introduction

5. Classification of Hardware Input Devices 1 Processing Unit 2 Storage Devices 3 Output Devices 4

6. Part 2: Input Devices

8. Input Devices a device that analyzes images, printed text, or handwriting, or an object and converts it to a digital image Scanner a pointing device by detecting two-dimensional motion relative to its supporting surface. Mouse for the input of text and characters and also to control the operation of a computer Keyboard

9. Input Devices a real-time camera (usually, though not always, a video camera) whose images can be accessed using the World Wide Web WebCam an electronic device used to capture and store photographs electronically in a digital format Digital Camera an acoustic to electric transducer or sensor that converts sound into an electrical signal. Microphone

10. Part 3: Processing Unit

16. TASK 1 (TABLE 1) AMD CPU Intel CPU Price (HK$) Cache Memory L2 (MB) Clock Frequency (GHz) Athlon 64 ADA 3200-CN Athlon 64 FX – 51/940 Celeron D356 Core 2 Due E6700 CPU Model

23. Part 4: Storage Devices

24. What are Types of Storage Devices? Storage Devices Primary Storage Secondary Storage Read-Only Memory (ROM) Random-Access Memory (RAM)

31. Secondary Storage 650 650 650 Data capacity (MB) Read & write Read but write once Read only Data can be CD-RW CD-R CD-Rom

32. Secondary Storage Single layer: 4.7 Double layer: 8.5 Single layer: 4.7 Double layer: 8.5 Single layer: 4.7 Double layer: 8.5 Data capacity (GB) Read & write Read but write once Read only Data can be DVD-RW /DVD+RW DVD-R /DVD+R DVD

34. Secondary Storage A CD-R disk A CD-RW disk

35. Secondary Storage A DVD-R disk A DVD+RW disk

38. Various Types of Memory Cards Microdrive Memory Stick xD card CF Card SD Card SM Card

39. Part 5: Output Devices