CCNA Discovery 1 - Chapter 1

Personal Computers
and Applications

Networking for Home and Small Businesses – Chapter
1

Version 4.0 © 2007 Cisco Systems, Inc. All rights reserved. Cisco Public 1

Objectives
 Identify the purpose and uses of personal computers
and describe local and network applications.
 Compare and contrast different types of computing
devices.
 Explain the binary representation of data.
 Determine appropriate components and peripheral
devices to meet requirements.
 Install, verify, and upgrade computer components and
peripherals.

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

Purpose and Uses of Personal Computers
 Multiple uses for computers


Purpose and Uses of Personal Computers
 Common local and network applications


Types of Computing Devices
 Different types of Computers


 Types and features of servers


 Features of a desktop personal computer (PC)


 Features of a workstation


 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


 Convert approximately between bits, bytes, Kilobytes,
Megabytes, and Gigabytes


 Measuring speed, resolution and frequency


Determining Appropriate Components and
Peripheral Devices
 Plan for computer purchase: preassembled or custom


Peripheral Devices
 Motherboard


Peripheral Devices
 Central Processing Unit (CPU)


Peripheral Devices
 Random Access Memory (RAM)


Peripheral Devices
 Adapter cards add functionality to a computer system


Peripheral Devices
 Storage Devices and Requirements


Peripheral Devices
 Peripheral device purposes and requirements


Peripheral Devices
 Importance of UPS and Surge Protector


Install, Verify and Upgrade Components and
Peripherals
 Computer Repair Best Practices


Peripherals
 Connect Computer System components and verify
operation


Peripherals
 Installing Peripherals and Verifying Operation


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 and
Hand-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. Analog
frequencies, wireless transmissions and radio frequencies are
measured in Hertz.
 Things to consider when purchasing a computer: Motherboard,
CPU, RAM, Adapter Cards, Storage, Peripherals, UPS, Surge
Suppressors
 Computers are a collection of very complex components and
peripherals. Safety procedures must be followed when working
inside a computer, both to protect the equipment and prevent harm
to the technician.

CCNA Discovery 1 - Chapter 1

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CCNA Discovery 1 - Chapter 1