Perry Mehta Solano Community College

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Perry MehtaSolano Community College

• CIS 1
• Introduction to Computers

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Objectives

• Computer Basics
• Internet Basics
• Web Basics
• Email Basics

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IS(T) Components

• IS(T) is collection of resources working together
  in a coordinated manner to store, process and
  provide data for end-users.
• Five main resources are
• People
• Hardware
• Software
• Data
• Networks

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Devices that comprise a computer system
Monitor (output)
Speaker (output)
System unit (processor, memory)
Printer (output)
Storage devices (CD-RW, Floppy, Hard disk, zip,)
Mouse (input)
Scanner (input)
Keyboard (input)
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What Does A Computer Do?

• Computers can perform four general operations,
  which comprise the information processing cycle.
• Input
• Process
• Output
• Storage

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How Does a Computer Know what to do?

• It must be given a detailed list of instructions,
  called a compute program or software, that tells
  it exactly what to do.
• Before processing a specific job, the computer
  program corresponding to that job must be stored
  in memory.
• Once the program is stored in memory the compute
  can start the operation by executing the program
  instructions one after the other.

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What Are The Primary Components Of A Computer ?

• Input devices.
• Central Processing Unit (containing the control
  unit and the arithmetic/logic unit).
• Memory.
• Output devices.
• Storage devices.

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Computer System
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Software

• Software is the key to productive use of
  computers
• Software can be categorized into two types
• Operating system software
• platform that brings hardware and software
  together
• Application software
• carries out certain tasks and objectives are
  business necessitates

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Categories of Computer Software
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Trends in Computer Software
First Generation
Second Generation
Third Generation
Fourth Generation
Fifth Generation
Trend Toward Easy-to-Use Multipurpose
Network-Enabled Application Packages for
Productivity and Collaboration
User-Written Programs Machine Languages
Packaged Programs Symbolic Languages
Operating Systems High-Level Languages
DBMS Fourth-Gen Languages Microcomputer
Packages
Natural Object-Oriented Languages Multipurpo
se Graphic- Interface Network-Enabled
Expert-Assisted Packages
Trend Toward Visual or Conversational
Programming Languages and Tools
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Common General- Purpose Applications

• Electronic Mail
• Word Processing
• Presentation Graphics
• Multimedia
• Personal Information Manager
• Groupware

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Web Browsers
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Multimedia Technologies
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Categories of Programming Languages
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Programming Language Translation
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Developing a Computer Program
Input data
High-level language
Low-level Language
Compiler
Link/load
Executablemodule
Source code
Machine language
Output

• Programmer
• Writes program in source code (VB, C, FORTRAN,
  Pascal, Java, etc)
• Compiler
• Converts source code to machine language program
• Linker
• Combines machine language program with service
  libraries converts to executable module
• Interpreter
• Converts source code to machine language and
  executes one line at a time

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Functions of an Operating System
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Application Software

• Application Software consists of programs that
  tell a computer how to produce information. Some
  of the more commonly used packages are
• Word processing
• Electronic spreadsheet
• Database
• Presentation graphics

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Word Processing

• Word Processing software is used to create and
  print documents. A key advantage of word
  processing software is that users easily can make
  changes in documents.

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Word Processing

• Enter Information
• Display Information
• Edit Information
• Store Retrieve Information
• Print Information

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Features of Word Processing

• Spell checker
• Grammar checker
• Thesaurus
• Macros
• Sorting
• Redlining
• Search Replace
• Merge

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Electronic Spreadsheets

• Electronic spreadsheet software allows the user
  to add, subtract, and perform user-defined
  calculations on rows and columns of numbers.
  These numbers can be changed and the spreadsheet
  quickly recalculates the new results.

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Spreadsheets

• Spreadsheet/Worksheet
• Rows/Columns
• Electronic Spreadsheets

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Functions of Spreadsheets

• Entering Data
• Cell Address - Cell Reference
• Active Cell
• Editing Data
• Sorting Worksheets
• Printing Worksheets

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Developing a Spreadsheet

• Define the Problem
• Plan the Spreadsheet Layout
• Enter Spreadsheet into Computer
• Test and Use the Spreadsheet

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Database Software

• Allows the user to enter, retrieve, and update
  data in an organized and efficient manner, with
  flexible inquiry and reporting capabilities.

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The Internet
Internet Services
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Business and the Internet
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Extranet Model
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Inter-networked Enterprise
The Internet
Company
Intranets
Extranet
Extranet
Intranet
Intranets
Intranets
Customer
Supplier
Intranets
Extranet
Extranet
Other Company Locations
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Intranets, Extranets, and the Internet
Internet Web Sites
Internet Links
Engineering Server
Marketing Server
CORPORATE INTRANET
Extranet Links
Extranet Links
Suppliers
Customers
Legacy Data Server
H.R. Server
Intranet Links
Other Company Locations