INTRODUCTION TO INFORMATION TECHNOLOGY

TOPIC 2.COMPUTER SYSTEM WHAT IS A COMPUTER??? An electronic device , operating under the control of instructions stored in its own memory , that  accept data(input) process data  produce information(output) store information for future use THE COMPONENTS OF A COMPUTER: HARDWARE THE COMPONENTS OF A COMPUTER  SOFTWARE COMPUTER BASED INFORMATION PROCESSING / INFORMATION PROCESSING CYCLE INPUT  PROCESS OUTPUT STORAGE INPUT- Any data and instructions entered into the memory of a computer. PROCESS Performing operation on the data OR Transforming data into information OUTPUT Presenting the results OR data that has been processed into a useful form. STORAGE Hold data , instructions and information for future use HOW TO REMEMBER MORE EFFICIENT 

4}MOBILE COMPUTER  E BOOK READER HANDHELD COMPUTER SMART PHONES DIGITAL CAMERA Is a portable personal computer{that can perform all of its input , processing and storage activities by itself}that you can carry from place to place. Examples:notebook computers , netbook , tablets , handheld computers. 5}MOBILE DEVICE Is a computing device small enough to hold in your hand. Examples:Smart phones and PDA's , E-book readers , Portable media players and digital cameras , Wearable devices PHYSICAL SIZE Fits on the lap , palm , and pocket SPEED Slower compared to a personal computer STORAGE Smaller storage media compared to a personal computer 6}EMBEDDED COMPUTER VIDEO WHAT IS EMBEDDED COMPUTER Is a special-purpose computer that functions as a component in a larger product and performs various functions depending on the product. PHYSICAL SIZE  Miniature  SPEED Slower compared to mobile computers and devices

WHAT IS COMPUTER??? computer is an electronic device operating under the control of instructions stored in its own memory that accepts data , process the data , produce results and stores the results for future use. CATEGORY OF COMPUTERS WHAT IS? 1} SUPERCOMPUTER A supercomputer is the fastest , most powerful , most expensive computer and used for very complex , sophisticated job such as nuclear energy research , weather forecasting , petroleum exploration , online banking , automotive design. PHYSICAL SIZE  Full room of equipment  SPEED Capable of processing many trillions of instructions in a second. STORAGE Can store more than 20,000 times the data and information  of an average desktop computer. 2}MAINFRAME A mainframe is a large , expensive , powerful computer that can handle hundreds or thousands of connected users simultaneously [multi-user] Mainframe often used in businesses that manage large amounts of data,for example ,insurance companies use main

7}TRAVEL Vehicles manufactured today often include some type of onboard navigation to help you navigate from one location to another. USAGE   GPS technology assists people to determine a geographic location , speed and time of destination. Many websites offer services where travellers can compare flights and prices , order airline tickets , or reserve a rental car . APPLICATIONS  1}Navigation System by Global Positioning System [GPS] Uses satellite to determine a geographic location , speed and time of destination. 2}ONLINE RESERVATION Transportation and accommodation reservation can be done through a Web Site. Eg:  Online Flight Booking , Online Hotel Booking , Online Car Reservation  8}MANUFACTURING Latest technology has helped in making manufacturing process more effective. USAGE Reduce product development costs  Shorten a product's time to market Stay ahead of the competition  APPLICATIO

APPLICATION OF INFORMATION TECHNOLOGY 1}EDUCATION Today , educators are turning computer to assist with education.Many schools & companies equip labs & classrooms with computers. APPLICATIONS *COURSEWARE educational material that is learned with the help of a computer.can be form of a flash drive,compact disk or material placed online. *WEB-BASED LEARNING / E-PORTAL a method of learning in which students choose their materials and use them to study on their own. 2}FINANCE companies use IT(finance software) to balance checkbooks,pay bills,track personal income and expenses. APPLICATIONS *ONLINE BANKING is a method of banking in which financial transactions(access account balances,pay bills,transfer funds)are conduced via the internet E.g:Maybank2u,CIMBClicks *ONLINE INVESTING is a system that allows investors to buy and sells stocks&bonds online without using a broker.E.g:Permodalan Nasional Berhad(PNB) 3}GOVERNMENT Most gove