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The use of computer hardware and software to store, retrieve, and manipulate information.

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Data, instructions, and information flow incredibly fast speeds. Many computers process billions or trillions of operations in a single second.

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The electronic components in computers are dependable and reliable because they rarely break or fail.

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A computer with the same input will produce the same results consistently.

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Computers store enormous amounts of data and make this data available for processing anytime it is needed.

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Computers today can communicate wirelessly with other computers. This allow users to communicate with one another

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Computers store enormous amounts of data and make this data available for processing anytime it is needed.

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Computers today can communicate wirelessly with other computers. This allow users to communicate with one another.

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Personal and confidential records stored on computers were not protected properly, individuals have found their privacy violated and identities stolen.

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Public will be victims to crimes committed by dangerous strangers because of their personal information that had been shared.

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Computers have improved productivity. This will make computers replaced many labours.

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-Prolonged or improper computer use can lead to health injuries.
-Behavioral health risks are computer addiction and technology overload.

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Computer manufacturing processes and computer waste are destroying natural resources and polluting the environment.

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-Learning Management System/Course Management System
*software that contain tools for class preparation, distribution     .    and management.
* through the course
management system, students   access course materials, grades, assessments and a variety of collaboration tools.
- Computer-based training
* uses computer-generated visuals or environment for training such as fight simulator used by pilots before flying new plane or different types of planes.

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-Finance Investment System
*investors can buy and sell stocks & bond online without using broker.
-Online Banking
*user can access account balances, pay bills and view monthly statement statement.

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-HRMIS (Human Resources Management Information System)
* online system for updating government employee information.
-e-Filing
* online system for declaring tax.
-e- Syariah
* online portal for providing information to public and members of the Syariah Court to get the latest information about the rules and procedures of the court.

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-Medline
*many web sites provide up-to-date medical fitness, nutrition or exercise information.
-Counter Registration System
*hospitals and doctors use computers and mobile devices to maintain and access patient record.
-Telemedicine
*the use of telecommunication and information technology to provide clinical health care from a distance.

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-Virtual Reality
*The use of computer to simulate a real or imagined environment that appears as 3D space.
-Hawk-Eye Officiating System
*Computer system used in sport such as tennis and badminton to visually track the ball from different angles and display a record of it.

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-Online Newspaper/Online Magazine
*use of it allows people to read newspaper/magazines online.
-Online Photo/Card Printing
*use of It allows people to send, edit and printing through online.

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-Global Positioning System(GPS)
*helps users to track routes for specific location.
-Automatic Roaming System
*Telecommunication companies provide automatic roaming for travelers to travel abroad.
-Online Reservation System
*Transportation & accommodation reservation can be done through website.

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-Computer-Aided Design(CAD)
*creates, modifies, analysis and optimizes a design.
-Computer-Aided Manufacturing (CAM)
* controls machine tools, mainly robot arms, in high-tech assembly lines.

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-The fastest, most powerful computer.
-Capable of processing more than one quadrillion instructions in a single second.
-Play an important role in the field of computational science, and are used for a wide range of computationally intensive tasks in various fields.
-Physical Size:Occupy a full room of equipment.
-Speed: Tens of thousands of processors.
-Storage: Extremely large storage.(3.1 PB)
-The size of supercomputer is larger than mainframe.
-The cost of supercomputer is more expensive than mainframe.

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-A large, expensive, powerful computer that can handle hundreds or thousands of connected users simultaneously
-Example:
*A banking institution could use a mainframe to host the database of its customer accounts
-Physical size: Occupy partial room to a full room of equipment.
-Speed: Dozens of processors.
-Storage: Very large & addable storage.(4.6 TB)
-The size of mainframe is smaller than supercomputer.
-The cost of mainframe is less expensive than supercomputer.

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-Can perform all of its input, processing, output, and storage activities by itself.
Example: Desktop computer
-Physical size: Fits on a desk.
-Speed: Single processor(1.5-2.5Ghz)
-Storage: Large(500 GB)
-The size of personal computer is more smaller the supercomputer and mainframe.
-The cost of personal computer is more less expensive than the supercomputer and mainframe.