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LIS508 lecture 3: looking at a computer

LIS508 lecture 3: looking at a computer. Thomas Krichel 2002-10-06. Admin news. Grades for the quizzes will be made available at http://wotan.liu.edu/home/krichel/lis508p02a/grades/ secret .html where secret is your word, transliterated into all lowercase, example seCret  secret

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LIS508 lecture 3: looking at a computer

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  1. LIS508 lecture 3: looking at a computer Thomas Krichel 2002-10-06

  2. Admin news • Grades for the quizzes will be made available at • http://wotan.liu.edu/home/krichel/lis508p02a/grades/secret.html • where secret is your word, transliterated into all lowercase, example • seCret  secret • SecrEt  secret

  3. Literature • Peter Norton “New inside the PC” chapter 1 and 5 • Ruth Maran and Paul Whitehead “Teach yourself computers visually”, chapter 1 and 3

  4. What is a PC • The PC was first brought out by IBM in 1981 • IBM published the design • Software to run it was bought from Microsoft • Microsoft had the right to have other companies use the operating system. • A PC is any computer that basically follows this tradition.

  5. Basic parts of a PC • Display do not open • Input no need to open • Keyboard • Mouse etc • System Unit may be opened • Logic system • Display system • Storage system • Input output system • Communication system

  6. Opening the system unit • Voltages used in the PC are 3 to 12 V • Be aware of static electricity, touch first • Unpainted part of case • Power supply • Keep power cable plugged in a grounded socket • Never open sealed part of the power supply

  7. Logic system I • Motherboard • green plastic sheet • with traces and slots • usually complying to a standard called “plug and play” • Jumpers can set key features • Jumper wires stick out of the motherboard • Can be shortened with jumpers • Do not change unless you have to

  8. The logic system II • CMOS or flash memory • Powered by battery • holds the Basic Input Output System (BIOS) • Central Processing Unit (CPU), recognizable through its fan • Cache memory for CPU • Main memory socket • The Bus (see later)

  9. BIOS • Is the software that makes the components of the PC work together • When the computer boots it tells you how to “enter setup” • There you can make changes to the BIOS setting • The way that you do this is not standardized • It usually is a simple menu. • Be careful

  10. Usual things to set in the BIOS • Set the hardware clock • Set processor speed (silly) • Tell the machine what disks you have • Power management options • Automatic wake up • Boot sequence setting

  11. The Bus • Set of connections between devices in the system unit. • In fact there are many buses • Types of bus • Industry Standard Architecture ISA bus (16 bit) • Peripheral Component Interconnect PCI bus (32 bit) • Accelerated graphics port (AGP) bus, only for graphics

  12. Next week • Using the keyboard • Using the mouse

  13. http://openlib.org/home/krichel Thank you for your attention!

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