Lesson Plan

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October 14, 1999

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Title

Clean the mouse / keyboard
Configure the CMOS
IRQ & DMA Management

Time Allotment

2 hrs

Afternoon Coursework

For Marks

Assignment #: DC06
Assignment: Input Devices / CMOS Worksheet
Due: Oct 15/99
Marks: 10 marks

PART A

1.      Why is resolution important when using a scanner? How is resolution typically measured and stated?

2.      How is optical character recognition different from optical mark recognition?

3.      What is a bar code? How are bar codes read? On what products are they used?

4.      How is speaker-dependent software different from speaker-independent software? How is discrete speech recognition different from continuous speech recognition?

5.      What is videoconferencing? How does a whiteboard enhance videoconferencing?

PART B

Formalize the System Configuration Worksheet that you developed as part of your lab. The settings listed in the lab are the bare minimum. List all settings of the CMOS in your Worksheet. The worksheet can be developed in Excel or in MS Word. This worksheet will be used as part of your course workbook.

ITCSS 2000 Hardware Lab

Cleaning Your Mouse

Your Tasks

  1. Complete the A+ Certification Steps
  2. Review Compaq's Online Guide

A+ Certification Steps

  1. Turn the mouse upside down.
  2. Locate and remove the cover of the mouse ball.
  3. Remove the mouse ball.
  4. Inside the housing of the mouse ball, you will find several rollers. Clear these rollers of debris.
  5. After clearing any debris that might be located on the rollers, replace the mouse ball and cover.

Compaq's Online Guide To Mouse Cleaning

http://www.compaq.com/athome/presariohelp/us/exterior/cemous.html

Cleaning Your Keyboard

Your Tasks

  1. Remove a few of the keys from your demo keyboard. Pay special attention to note the locations of all the keys. Replace all keys back on to the keyboard.

Clearing a Stuck Key

A+ Certification Steps

Most keyboards are designed to allow the key to be removed by gently pulling or prying the key upwards. This procedure is most commonly used when debris has become jammed underneath a particular key.

CMOS Manipulation

Creating a System Configuration Worksheet

A System Configuration Worksheet is a spreadsheet or some sort of document that contains all of your workstation's CMOS configuration parameters. Use the sections below to develop your own System Configuration Worksheet for your lab workstation.

For each of the following system components, record the information currently saved in your lab workstation's CMOS:

Your Tasks

Changing CMOS Values

  1. Review the System Configuration Worksheet items (above) and develop your own in Excel.
  2. Print out your worksheet so you can record information.
  3. Restart your PC.
  4. Following the instructions on your screen, enter the setup program.
  5. Record all information from the PC's CMOS into your spreadsheet.
  6. Change the DATE for your computer to today's date, in the year 2000.
  7. Change the Hard Disk Drive configuration to NONE.
  8. Save your changes.
  9. Shut down your computer and allow it to reboot.
  10. Observe the changes in the startup sequence.
  11. Enter the setup program.
  12. Reconfigure your hard drive to match the parameters of your System Configuration Worksheet.
  13. Activate the Power Management on your PC.
  14. Assign the password of LAB in all capital letters to your system setup program.
  15. Save your changes.
  16. Shut down your computer and allow it to reboot.
  17. Observe the changes in the startup sequence.

Restoring Your Lab Workstation Using the System Configuration Worksheet

  1. Type the system startup password.
  2. Enter the setup program.
  3. Disable the system startup password.
  4. Referring to the System Configuration Worksheet, verify that all the CMOS settings are back to their original configuration.

IRQ and DMA Management

Your Tasks

What is an IRQ & DMA?

  1. Review Lab Notes (below).
  2. Review PCGuide for information on DMA's: http://www.pcguide.com/ref/mbsys/res/dma/index.htm
    Pay particular attention to: description of DMAs, why they were invented (function & operation), and the channel details by number.
  3. Review PCGuide for information on IRQ's: http://www.pcguide.com/ref/mbsys/res/irq/index.htm
    Pay particular attention to: description of IRQ's, why interrupts are used to process information, (function & operation), and IRQ details by number.

Recording your lab workstation's IRQ settings

  1. Start your lab workstation and allow it to boot into Windows 95.
  2. Click the Start button.
  3. Point to the Settings.
  4. Click Control Panel.
  5. Double click the System icon.
  6. Click the Device Manager tab.
  7. Click the properties button.
  8. Record the device name for each of the following IRQs: IRQ00, IRQ01, IRQ02, IRQ03, IRQ04, IRQ05, IRQ06, IRQ07, IRQ08, IRQ09, IRQ10, IRQ11, IRQ12, IRQ13, IRQ14, IRQ15

Recording your lab workstation's DMA settings

  1. Start your lab workstation and allow it to boot into Windows 95.
  2. Click the Start button.
  3. Point to the Settings.
  4. Click Control Panel.
  5. Double click the System icon.
  6. Click the Device Manager tab.
  7. Click the properties button.
  8. Click the Direct Memory Access (DMA) option button.
  9. Record the device name and number for each of the installed components.

Lab Notes

Device Manager

Device Manager is a Windows 95 program that you can use to view all of the currently installed device drivers and their resource configuration.

What is an IRQ?

An IRQ is a number that is assigned to a device and is used to signal the CPU for servicing.

What is a DMA?

A DMA controller chip is a chip that resides on the systemboard and provides channels that a device may use to send data directly to memory, bypassing the CPU.