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Computer HardwareWindows ’98 and Internet Explorer

Chapter 1Components of Your

Computer

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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

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Required Text

Chanaka Ekanayake

Computer Hardware Window’s 98 and Internet Explorer

ISBN 0-536-61475-X

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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.

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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.

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Class Structure

LectureTah.1002

9:00

Lab ExerciseTah. 1009

10:15 10:30 11:45

LectureTah.1002

9:00

Lab ExerciseTah. 1009

10:15 10:30 11:45

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What is a computer?

It is an electronic device that performs arithmetic and logic operations according to certain instructions

Input Output

Data Information

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Types of Computers

Mainframes Minicomputers Microcomputers

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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

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Minicomputers Medium size Medium capacity Medium speed Cheaper than mainframes

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Microcomputers Small size Small capacity Slower speed Cheap PC’s and laptops are

Microcomputers

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Components of a Computer Input Devices Output Devices Processing Unit Auxiliary Storage Devices

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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

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Output Devices Monitors

CRT (Cathode Ray Tube) LCD (Liquid Crystal Display)

Printers DeskJet LaserJet

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Monitors Image consists of small dots or

pixels More pixels means clearer image Examples (800x600, 1280x1024)

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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)

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Processing Unit CPU clock controls how fast CPU

performs calculations It is measured in MHZ (Million

cycles per second)Examples:

66 MHZ233 MHZ |800 MHZ

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Processing Unit

Arithmetic and Logic Unit (ALU)

Control Unit (CU)

Primary Storage

Unit

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Memory Main memory

RAM Secondary memory

Hard disc Floppy disc ROM

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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

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ROM ROM (Read Only Memory)

Allows reading only It does not lose the information stored

when power is turned off PROM, EPROM, EEPROM

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Auxiliary Storage Memory Hard drives Floppy drives CD’s Zip drives CD-R, CD-RW

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Hard Drive Internal or External Size in MB or GB Lower the access time, the faster the

hard drive reads data (example 9ms)

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Floppy Drive Two types

5.25” (size) 360 KB (capacity)

3.5” (size) 1.44 MB (capacity)

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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

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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

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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

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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

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Computer Software System Software

Windows 98; Windows 2000; Windows NT

UNIX, LINUX Application Software

MS Access; MS Word; MS PPT; MS Excel

WordPerfect 8

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LAN # 7Sun system

LAN # 6Layout Division

LAN # 5CAD Division

LAN # 4High-frequency Group

LAN # 3Mixed-signal group

LAN # 2Linear Group

LAN # 1Power Managem ent Group

IBM Compatible

Communication Networks

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Network Topologies Star

Bus

Ring

Net

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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

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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

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This Week

No assignment