S.1 Computer Literacy Mr. Leung Wing Chung

Practical Test  In the second test (in March), you will do a practical test with Microsoft Word and Microsoft Excel.  Written test will be conducted for first test and both exams.

Seating Arrangement  Please fill in your Chinese name, English name and class number when you fill in the draft seating plan.  E.g. 陳大文 (1) Chan Tai Man David

Computer Room Regulations  See the “Acceptable Use Policy”

How to log in computers  User name: student no. (start with S)  Password: STRN (your ID in entrance exam)

Survey  Do you have any experience on the following?  Word processing? (e.g. MS Word)  Spreadsheets? (e.g. MS Excel)  Image processing? (e.g. Photoshop)  Audio / movie processing?  Homepage authoring?  Using Facebook?

Survey (2)  Do you have any experience on the following?  Setting up / repair computers?  Writing programs? (e.g. Visual Basic, C++, PHP, …)  Database? (e.g. MS Access, SQL)

Survey (2)  Did you hear the following terms?  Linux  Android  WIFI  WEP  Hash function  Salt and IV (initialization vector)

1.1 H OW D OES A C OMPUTER W ORK ?

1.1 How Does a Computer Work? Every computer operation can be divided into three stages: input, process and output.

1.1 How Does a Computer Work? A student working on a worksheet Washing clothes by a washing machine Example of ‘ input  process  output ’

1.1 How Does a Computer Work? ‘ Input  process  output ’ represents the three stages of a computer operation process. Input Enter data and command into a computer. Process The computer works on the data. The computer shows the processed results. Output Three stages of a computer operation process

1.2 W HAT ARE THE C OMPONENTS OF A C OMPUTER S YSTEM ?

1.2 What are the Components of a Computer System? Hardware The physical part of a computer system Software A sequence of instructions to control the computer system No physical form

1.2 What are the Components of a Computer System? Hardware composed of input devices, a system unit, output devices

1.2 What are the Components of a Computer System? Input devices for entering commands or data into the computer scanner mouse keyboard microphone

1.2 What are the Components of a Computer System? System unit contains a central processing unit (CPU), circuit boards, a power supply and storage devices works on data together with the software to produce processed results System unit

1.2 What are the Components of a Computer System? Output device The processed result can be displayed to users by different output devices. Speakers printer monitor

Software Software can be classified into two types: system software and application software. 1.2 What are the Components of a Computer System?

System software manages the operations of computer hardware helps us operate the computer system easily controls and facilitates the execution of the application software Macintosh Operating System Microsoft Windows XP 1.2 What are the Components of a Computer System?

Application software carries out specific tasks for the user application software cannot be run on a computer system without the presence of an operating system 1.2 What are the Components of a Computer System?

Relationship between software and hardware 1.2 What are the Components of a Computer System?

Type of application software FunctionExample Word processorCreate, edit, format, save and print documents. Microsoft Word Spreadsheet Perform calculation and data manipulation. Create charts. Microsoft Excel

Type of application software FunctionExample Presentation softwareCreate presentations and slide shows. Microsoft PowerPoint Image editing softwareEdit photos and graphics. Ulead Photolmpact 1.2 What are the Components of a Computer System?

Type of application software FunctionExample Communication softwareExchange messages between different computers. Microsoft Outlook 1.2 What are the Components of a Computer System?