© 2007 Cisco Systems, Inc. All rights reserved.Cisco Public ITE PC v4.0 Chapter 1 1 Personal Computers and Applications Networking for Home and Small Businesses – Chapter 1

ITE PC v4.0 Chapter 1 2 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Objectives  Purpose and uses of personal computers  Local and network applications  Different types of computing devices  Binary representation of data  Appropriate components and peripheral devices to meet requirements  Installation, verification, and upgrade of computer components and peripherals

ITE PC v4.0 Chapter 1 3 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Purpose and Uses of Personal Computers  Common local and network applications

ITE PC v4.0 Chapter 1 4 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Types of Computing Devices  Different types of Computers

ITE PC v4.0 Chapter 1 5 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Types of Computing Devices  Types and features of servers A blade server is a chassis housing multiple thin, modular electronic circuit boards A server designed to fit industry- standard-sized computer racks A standalone device is able to function independently of other hardware

ITE PC v4.0 Chapter 1 6 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Types of Computing Devices  Types and features of servers Blade server je vestavěn v šasi a skládá se z mnoha tenkých desek Rack Mount: Určený k vestavění do normovaných průmyslových skříní Standalone: Samostatně stojící, nepotřebuje žádný další HW

ITE PC v4.0 Chapter 1 7 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Types of Computing Devices  Desktop personal computer (PC): Nenáročné „kancelářské“ aplikace

ITE PC v4.0 Chapter 1 8 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Types of Computing Devices  Workstation: Náročné, např. grafické, aplikace

ITE PC v4.0 Chapter 1 9 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Types of Computing Devices  Types and features of portable devices

ITE PC v4.0 Chapter 1 10 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Binary Representation of Data  Digital (binary) representation: Číslicové (dvojkové) vyjádření informací

ITE PC v4.0 Chapter 1 11 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Binary Representation of Data  Convertion between bits, bytes, Kilobytes, Megabytes, and Gigabytes

ITE PC v4.0 Chapter 1 12 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Binary Representation of Data  Measuring speed, resolution and frequency  Měření rychlosti, rozlišení a kmitočtu Rychlost procesoru se měří v mega(giga)hertzech Rozlišení monitoru se měří v bodech

ITE PC v4.0 Chapter 1 13 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Determining Appropriate Components and Peripheral Devices = určení správných součástí a periferií  Plan for computer purchase: preassembled or custom  Jak plánovat nákup PC: Předem sestavený, nebo si ho skládat podle svých představ

ITE PC v4.0 Chapter 1 14 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Determining Appropriate Components and Peripheral Devices  Motherboard

ITE PC v4.0 Chapter 1 15 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Determining Appropriate Components and Peripheral Devices  Central Processing Unit (CPU)

ITE PC v4.0 Chapter 1 16 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Determining Appropriate Components and Peripheral Devices  Random Access Memory (RAM)

ITE PC v4.0 Chapter 1 17 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Determining Appropriate Components and Peripheral Devices  Adapter cards add functionality to a computer system  Přídavné karty a další funkce pro počítač

ITE PC v4.0 Chapter 1 18 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Determining Appropriate Components and Peripheral Devices  Storage Devices and Requirements  Paměťová zařízení a požadavky

ITE PC v4.0 Chapter 1 19 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Determining Appropriate Components and Peripheral Devices  Peripheral device purposes and requirements  Účel periferií a požadavky na ně

ITE PC v4.0 Chapter 1 20 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Determining Appropriate Components and Peripheral Devices  Importance of UPS and Surge Protector  Důležitost záložního zdroje a ochrany proti výbojům Uninterruptible Power Supply

ITE PC v4.0 Chapter 1 21 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Install, Verify and Upgrade Components and Peripherals Bezpečnost a osvědčené postupy

ITE PC v4.0 Chapter 1 22 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Install, Verify and Upgrade Components and Peripherals  Connect Computer System components and verify operation Zapoj a ověř funkci

ITE PC v4.0 Chapter 1 23 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Install, Verify and Upgrade Components and Peripherals  Installing Peripherals and Verifying Operation

ITE PC v4.0 Chapter 1 24 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public Summary  Computers are used everywhere: government, medical, education, manufacturing, legal and leisure.  Types of computers: 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.  Important things when purchasing a computer: Motherboard, CPU, RAM, Adapter Cards, Storage, Peripherals, UPS, Surge Suppressors  Safety procedures must be followed to protect both the equipment and the technician.

ITE PC v4.0 Chapter 1 25 © 2007 Cisco Systems, Inc. All rights reserved.Cisco Public