Summary Chapter 1 - Information Technology

Definition of Information Technology is the use of computer hardware and software to store , retrieve and manipulate information . 

Advantages of Information Technology

• -To efficiently and effectively access and search for information via the internet
• -Improves communication through communication technology
• -Improves data storage and file management

Disadvantages of Information Technology

• -Reduce job opportunity
• -Security breaches
• -Higher cost of hardware and software installation
• -Health risks 

IT Applications in Education

• -Learning management system
• -Library loan system 
• -Online tuition
• -Educational software
• -E-learning Web sites
• -E-test

IT Applications in Finance/Banking 

• -Online banking
• -Electronic payment system
• -Finance investment system
• -Online investing system

IT Applications Health Care

• -Telepharmacy
• -Surgery simulation
• -Health care Websites
• -Telemedicine
• -Telesurgery
• -Monitoring of patients

IT Applications in Science

• -Capsule Endoscopy system
• -Cochlear implants
• -Electrodes implant
• -Cardiac pacemaker implant
• -Neural network
• -Virtual reality

IT Applications in Travel

• -Global positioning system (GPS)
• -Car navigation system
• -Online reservation system/Booking system
• -E-ticketing system 

IT Applications in Government

• -e-Filing
• -e-penyata gaji dan laporan
• -UPU online
• -E-syariah 

IT Applications in Manufacturing

• -Computer-aided manufacturing (CAM)
• -Computer-aided design (CAD)
• -Barcode system 

IT Applications in Publishing

• -Online photo printing
• -Online card printing  

What is a computer? Computer is a programmable electronic device that accepts data input , processess the data , outputs the results and stores the results.

Supercomputer - 

physical size : full room of equipment

speed : the fastest and most powerful type of computer with thousands of processors capable of processing trillions of instructions per second

storage : highest storage capacity that can store complex and sophisticated applications , and can store more than 20000 times the data and information of and average desktop computer

Mainframes -

physical size : partial room to a full room of equipment 

speed : A large and powerful computer that can process millions of instructions per second and handle a thousands of connected computers 

storage : Larger storage capacity that can store data , instructions , and information for businesses applications and activities

Personal computer -

physical size : Small computer from desktop to laptop computers that fits on a desk or fits on your lap

speed : A computer based on a microprocessor designed for individuals and businesses 

storage : storage capacity ranges from GB to TB

Mobile computers -

physical size : computers that are designed to be carried around easily about the size of a paper notebook to fit in one hand

speed : A computer based on a microprocessor designed for individuals and businesses 

storage : storage capacity ranges from GB to TB

Mobile devices-

physical size : very small communications device (pocket-sized computers) 

speed : a computer based on a microprocessor that contain built-in computing or internet capabilities

storage : storage capacity up to GB that can store mobile applications

Embedded computers-

physical size : A tiny computer embedded into a product (installed in a device)

speed : tiny specialized microprocessors installed in a smart appliances and automobiles

storage : storage capacity normally in KB