Computer Hardware

1. Computer HardwareWindows ’98 and Internet Explorer Chapter 1 Components of Your Computer MIS001 A

2. Contact me • Instructor Xiaobing Zhao • Office BUS-2121 • Telephone 278-6614 • E-mail zhao@csus.edu • Office hour Fri. 3:00-5:00 • Web site www.csus.edu/mis MIS001 A

3. Required Text Chanaka Ekanayake Computer Hardware Window’s 98 and Internet Explorer • ISBN 0-536-61475-X MIS001 A

4. Course Objective The purpose of this course is to introduce the fundamentals of using microcomputer hardware and software, focusing on the most widely used hardware and operating system in the world: IBM PC’s and Windows 98. MIS001 A

5. Grading This course is graded on a Credit (CR) or No Credit (NC) basis. No letter grades will be assigned. To receive Credit (CR) for this course, you must earn a minimum of 70 out of a possible 105 points. There will be 100 points possible on the final exam and 5 points possible for the course assignment. MIS001 A

6. Lab Exercise Tah. 1009 Lab Exercise Tah. 1009 Lecture Tah.1002 Lecture Tah.1002 10:15 10:15 10:30 10:30 11:45 11:45 9:00 9:00 Class Structure MIS001 A

7. What is a computer? It is an electronic device that performs arithmetic and logic operations according to certain instructions Data Information Input Output MIS001 A

8. Types of Computers • Mainframes • Minicomputers • Microcomputers MIS001 A

9. Mainframes • Large size • Large capacity in tera bytes (1 tera byte = 1000 GB) • High speed in MIPS (Millions of Instructions Per Second) • Cost a lot MIS001 A

10. Minicomputers • Medium size • Medium capacity • Medium speed • Cheaper than mainframes MIS001 A

11. Microcomputers • Small size • Small capacity • Slower speed • Cheap • PC’s and laptops are Microcomputers MIS001 A

12. Components of a Computer • Input Devices • Output Devices • Processing Unit • Auxiliary Storage Devices MIS001 A

13. Input Devices • Keyboard • Mouse • Left click to select an item • Right Click to show the shortcut menu • Double click to open a file or run a program • Scanner • Bar code readers MIS001 A

14. Output Devices • Monitors • CRT (Cathode Ray Tube) • LCD (Liquid Crystal Display) • Printers • DeskJet • LaserJet MIS001 A

15. Monitors • Image consists of small dots or pixels • More pixels means clearer image • Examples (800x600, 1280x1024) MIS001 A

16. Processing Unit • Brain of computer • Intel family of processors: 8080, 8086, 8088, 80286, 80386, 80486, Pentium, Pentium II, Pentium III, Pentium IV • MMX - additions to the CPU programming that allow it to process multimedia tasks better and faster (such as graphics and sound) MIS001 A

17. Processing Unit • CPU clock controls how fast CPU performs calculations • It is measured in MHZ (Million cycles per second) • Examples: • 66 MHZ • 233 MHZ • | • 800 MHZ MIS001 A

18. Primary Storage Unit Control Unit (CU) Arithmetic and Logic Unit (ALU) Processing Unit MIS001 A

19. Memory • Main memory • RAM • Secondary memory • Hard disc • Floppy disc • ROM MIS001 A

20. RAM • RAM (Random Access Memory) • Contents of RAM will be lost once power is turned off (volatile memory) • Allows reading and writing • Computer’s primary storage of data to be processed MIS001 A

21. ROM • ROM (Read Only Memory) • Allows reading only • It does not lose the information stored when power is turned off • PROM, EPROM, EEPROM MIS001 A

22. Auxiliary Storage Memory • Hard drives • Floppy drives • CD’s • Zip drives • CD-R, CD-RW MIS001 A

23. Hard Drive • Internal or External • Size in MB or GB • Lower the access time, the faster the hard drive reads data (example 9ms) MIS001 A

24. Floppy Drive • Two types • 5.25” (size) • 360 KB (capacity) • 3.5” (size) • 1.44 MB (capacity) MIS001 A

25. Floppy Drive • Write Protection - Read only • 5.25” - put a sticker on upper right notch • 3.25” - push bottom right notch down • Advantages of floppy drives • Inexpensive • Portable • Disadvantages of floppy drives • Slow access time • Low capacity MIS001 A

26. Zip Drive • The ZIP drive uses special high capacity disks (Zip disks) that can store from 100Mb to 1 GB of information. • Operates about as fast as most standard hard drives. • Extremely convenient for transferring or storing substantially large amounts of data or backup operations MIS001 A

27. CD ROM • Drive Speeds: 4X, 6X, 8X, 10X, 16X, 20X, 24X • Now drives both read and write • CD-ROM can store up to 650 MB MIS001 A

28. Modem • Device that allows transfer of data over phone lines (Internet access, faxing, etc.). • Speed of modem measured in bits per second or bps (14.4 Kbps, 28.8 K bps, 56 kbps). • 56K Modems are now popular MIS001 A

29. Computer Software • System Software • Windows 98; Windows 2000; Windows NT • UNIX, LINUX • Application Software • MS Access; MS Word; MS PPT; MS Excel • WordPerfect 8 MIS001 A

30. Communication Networks MIS001 A

31. Network Topologies • Star • Bus • Ring • Net MIS001 A

32. Communication Networks • Local Area Network (LAN) • Share equipments, such as printer, scanner • Network Interface Card (NIC) • Intranet • Wide Area Network (WAN) • Internet • Extranet • Two or more intranets • Partnership MIS001 A

33. Internet and World Wide Web • Internet • Several wide area network connected together: • HTTP: • Hyper Text Transfer Protocol • Protocol: works as a medium • URL address • HTML documents MIS001 A

34. This Week • No assignment MIS001 A