Chs3 4 online

Discovering Computers Fundamentals, 2011 Edition Chapter 3

Business Software

• A software suite is a collection of individual programs available together as a unit

• A personal information manager (PIM) is application software that includes


118


Business Software


2Pages 118 - 119Figures 3-12 – 3-14


Business Software

• Enterprises typically require special computing solutions for various functional units


3Page 119


Graphics and Multimedia Software


4Page 120 Figure 3-15

Click to view Web Link,click Chapter 3, Click Web Link from left navigation, then click Graphics Software below Chapter 3




5Page 121Figures 3-16 – 3-18




6Pages 121 - 122Figures 3-19– 3-20


Video: MediaCell Video Converter


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CLICK TO START



• Web page authoring software helps users of all skill levels create Web pages that include multimedia and interactive content


8Page 122


Software for Home, Personal, and Educational Use


9Pages 124– 125Figures 3-22 – 3-24




10Pages 125 – 126Figures 3-25 – 3-26




11Pages 126 - 127Figures 3-27 – 3-29




12Pages 127 – 128Figures 3-30 – 3-32

Click to view Web Link,click Chapter 3, Click Web Link from left navigation, then click Game Software below Chapter 3


Web Applications

• A Web application (Web app) is a Web site that allows users to access and interact with software from any computer or device that is connected to the Internet


13Pages 128 – 129Figure 3-33


Web Applications




Application Software for Communications




Learning Tools for Application Software

• Online Help is the electronic equivalent of a user manual

• You can ask a question or access the Help topics in subject or alphabetical order




Learning Tools for Application Software

• Web-based training is a type of CBT that uses Internet technology and consists of application software on the Web

• Distance learning (DL) is the delivery of education at one location while the learning takes place at other locations




Summary


18Page 132


Chapter 4 The Chapter 4 The Components of the Components of the System UnitSystem Unit


Objectives Overview


20See Page 155for Detailed Objectives


Objectives Overview


21See Page 155for Detailed Objectives


The System Unit

• The system unit is a case that contains electronic components of the computer used to process data




The System Unit

• The inside of the system unit on a desktop personal computer includes:




The System Unit

• The motherboard is the main circuit board of the system unit– A computer chip contains integrated circuits




Processor

• The processor, also called the central processing unit (CPU), interprets and carries out the basic instructions that operate a computer– Contain a control unit and an arithmetic logic unit

(ALU)


25Page 159


Processor



Click to view Web Link,click Chapter 4, Click Web Link from left navigation, then click Multi-Core Processors below Chapter 4


Processor

• The control unit is the component of the processor that directs and coordinates most of the operations in the computer

• The arithmetic logic unit (ALU) performs arithmetic, comparison, and other operations


27Pages 159 - 160


Processor

• For every instruction, a processor repeats a set of four basic operations, which comprise a machine cycle




Processor


29Pages 160 - 161


Data Representation


30Page 162


Data Representation

A computer circuit represents the 0 or the 1 electronically by the presence or absence of an electrical charge

Eight bits grouped together as a unit are called a byte. A byte represents a single character in the computer


31Page 162 Figures 4-6 – 4-7


Data Representation

• ASCII (American Standard Code for Information Interchange) is the most widely used coding scheme to represent data




Data Representation




Memory

• Memory consists of electronic components that store instructions waiting to be executed by the processor, data needed by those instructions, and the results of processing the data

• Stores three basic categories of items:


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Memory

• Each location in memory has an address• Memory size is measured in kilobytes (KB or K),

megabytes (MB), gigabytes (GB), or terabytes (TB)




Memory

• The system unit contains two types of memory:


36Pages 164 - 165


Memory




Memory

• Three basic types of RAM chips exist:


38Page 166

Click to view Web Link,click Chapter 4, Click Web Link from left navigation, then click RAMbelow Chapter 4


Memory

• RAM chips usually reside on a memory module and are inserted into memory slots




Memory

• The amount of RAM necessary in a computer often depends on the types of software you plan to use

• Memory cache speeds the processes of the computer because it stores frequently used instructions and data


40Pages 166 - 167


Memory


41Page 167

Click to view Web Link,click Chapter 4, Click Web Link from left navigation, then click ROMbelow Chapter 4


Memory

• Flash memory can be erased electronically and rewritten– CMOS technology

provides high speeds and consumes little power


42Pages 167 – 168Figure 4-14


Memory

• Access time is the amount of time it takes the processor to read from memory– Measured in nanoseconds


43Page 168Figures 4-15 – 4-16


Memory

• End for today• We will cover the rest at the nextweek’s class


44Page 168Figures 4-15 – 4-16

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