discovery home sb chapter 1

8/3/2019 Discovery Home SB Chapter 1

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© 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

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Chapter 1 1

Personal Computers

and Applications

Networking for Home and Small Businesses –

Chapter 1



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Chapter 1 2 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public

Objectives Identify the purpose and uses of personal computers

and describe local and network applications.

Compare and contrast different types of computingdevices.

Explain the binary representation of data.

Determine appropriate components and peripheraldevices to meet requirements.

Install, verify, and upgrade computer components andperipherals.



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Purpose and Uses of Personal Computers Multiple uses for computers



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Purpose and Uses of Personal Computers Common local and network applications



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Types of Computing Devices Different types of Computers



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Types of Computing Devices Types and features of servers


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Types of Computing Devices Features of a desktop personal computer (PC)




Types of Computing Devices Features of a workstation




Types of Computing Devices Types and features of portable devices




Binary Representation of Data Digital (binary) representation of various common forms

of data

Using the proper units for measuring information




Binary Representation of Data Convert approximately between bits, bytes, Kilobytes,

Megabytes, and Gigabytes




Binary Representation of Data Measuring speed, resolution and frequency



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Determining Appropriate Components andPeripheral Devices

Plan for computer purchase: preassembled or custom



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Motherboard



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Central Processing Unit (CPU)



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Random Access Memory (RAM)



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Adapter cards add functionality to a computer system



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Storage Devices and Requirements



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Peripheral device purposes and requirements



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Importance of UPS and Surge Protector



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Install, Verify and Upgrade Components andPeripherals

Computer Repair Best Practices



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Install, Verify and Upgrade Components andPeripherals

Installing Peripherals and Verifying Operation



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Summary Computers are used all over the world and in all types of

environments including: government, medical, education,manufacturing, legal and leisure.

There are many different types of computers available including:Mainframes, Servers, Desktop PCs, Workstations, Laptops andHand-held portable devices.

Data is represented by binary digits (bits) organized into bytes (B),kilobytes (kB ), megabytes (MB), gigabytes (GB), and terabytes(TB). Data transfer rates are measured by bits per second.Computer screen resolution is measured in pixels. Analogfrequencies, wireless transmissions and radio frequencies aremeasured in Hertz.

Things to consider when purchasing a computer: Motherboard,CPU, RAM, Adapter Cards, Storage, Peripherals, UPS, SurgeSuppressors

Computers are a collection of very complex components andperipherals. Safety procedures must be followed when workinginside a computer, both to protect the equipment and prevent harmto the technician.



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