free barcode reader c# Lab Exercise 203: Recognizing External Connections in Software

Generator GS1 - 13 in Software Lab Exercise 203: Recognizing External Connections

Lab Exercise 203: Recognizing External Connections
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Step 7 Examine other computers to see if they have different connectors from the ones you ve already documented See if you can identify the peripherals that connect to those sockets and plugs Step 8 The two system units in Figure 2-5 look different, but they have many connectors in common Try to nd the following connectors on each system unit: Power Monitor Mouse Keyboard Printer Network
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FIGURE 2-5 Can you match the connectors on these two system units
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2: The Visible PC
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Step 9 Describe the connector that matches each type of cable in the list Use 2 of Mike Meyers A+ Guide to Managing and Troubleshooting PCs, Vol 1: Essentials or your notes (photos) for reference Cable Type Keyboard cable Mouse cable Speaker cable Monitor data cable Printer data cable (printer end) Printer data cable (PC end) Network data cable Modem/telephone wire Connector Type(s) __________________ __________________ __________________ __________________ __________________ __________________ __________________ __________________
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Step 10 Identify the connectors pictured below What is the name of each connector, and what does it connect to
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A _________________
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B _________________
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C _________________
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D _________________
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E _________________
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Lab Exercise 204: Safeguarding Against Damage from Electrostatic Discharge (ESD)
S 30
MINUTES
Lab Exercise 204: Safeguarding Against Damage from Electrostatic Discharge (ESD)
So far, everything that you ve explored has been accessible without removing the cover of the PC In the next few labs, you ll be opening up the case to explore the components inside As discussed in Mike Meyers A+ Guide to Managing and Troubleshooting PCs, Vol 1: Essentials, good techs always protect themselves and the systems they work on from electrical damage Protecting you is fairly easy at this point: Unplug the power cord from the electrical outlet and from the power supply on the PC (see Figure 2-6)
To protect the system unit s sensitive components, you can use the following tools: Anti-static wrist strap Anti-static mat or anti-static wrist strap and mat combination Anti-static bag
Proper use of these tools will help safeguard the components of the system unit against electrostatic discharge (ESD) damage just as removing the power cord from the PC and the wall will help ensure that you are around to work on PCs for many years to come!
Learning Objectives
In this lab, you will learn the techniques to protect both yourself and the sensitive components of the computer system from damage caused by electricity and electrostatic discharge
FIGURE 2-6 Unplugging the power to protect yourself
2: The Visible PC
After completing this lab, you ll be able to Disconnect the power cord from the PC and the wall outlet, protecting yourself from electrocution Properly connect an anti-static wrist strap or anti-static wrist strap/mat combination Properly store unused components in an anti-static bag
Lab Materials and Setup
The materials you need for this lab are A lab partner, if possible At least one PC that isn t vital to your (or anyone else s) home or business, not necessarily in working order, but preferably less than a few years old An anti-static wrist strap An anti-static mat (optional) Twelve anti-static bags of various sizes A clean, well-lighted workspace of about 3 4 (a kitchen table with some newspaper spread about usually makes a fairly decent ad-hoc lab bench)
Getting Down to Business
Warning
Shut off the power to your system and unplug the power cord from your PC and from the wall socket before doing the following exercise
Step 1 Disconnect all the external cables (monitor, keyboard, mouse, printer, etc) from the PC you are going to use, and place them on a at, stable surface (preferably on an anti-static mat) where you can sit or stand comfortably to inspect the insides Step 2 Using whichever method applies to your case (thumbscrews, Phillips-head screws, locking tabs), remove the cover of your system unit Don t get frustrated if the opening method isn t obvious at rst as Mike Meyers points out, even seasoned techs can have a hard time guring out how an unfamiliar case opens Step 3 Locate a place on the chassis (the metal frame inside the case) where you can attach the alligator clip of the anti-static wrist strap or anti-static mat (whichever one you decided to purchase) Be prepared to wear the anti-static wrist strap in later labs (see Figure 2-7)
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