- Information Technology (IT) is the use of computer hardware & software to store, retrieve, & manipulate information.
Advantages (IT) :
- To Efficiently and effectively access and search for information via the Internet, Improves communication through communication technology, Improves data storage & file management
Disadvantages (IT) :
- Reduce job opportunity, Security breaches, Health risks
The applications of IT :
- Education : Learning management system, library loan system, online tuition, educational sofware, E-learning Web sites, E-test.
- Finance/banking : Online banking, electronic payment system, Finance investment system, online investing system.
- Health care : Surgery simulation, health care websites, telepharmacy, telemedicine, telesurgery.
- Science : Capsule endocopy system, cochlear implants, electrodes implant, cardiac pacemaker implant, neural network, virtual reality.
- Travel : Global positioning system, car navigation system, booking system, E-ticketing system.
- Government : e-Filing, e-penyata gaji dan laporan, UPU online, E-syariah.
- Manufacturing : Computer-aided manufacturing, computer-aided design, barcode system.
- Publishing : Online photo printing, online card printing.
Categories of computers include :
- Supercomputers: - Full room of equipment, the fastest & most powerful type of computer with thousands of processors capable of processing trillions of instruction per second. highest storage capacity that can store complex & sophisticated applications, & can store more than 20,000 times the data & information of an average dekstop computer.
- Mainframes : Partial room to a full room of equipment, a large & powerful computer that can process millions of instruction per second and handle thousands of connected computers. larger storage capacity that can store data, instruction & information for business applications & activities.
- Personal computer : small computer from dekstop to laptop computer that fits on a desk or fits on your lap. a computer based on a microprocessor designed for individuals and bussiness, capable to provide computing power for home & office environment. Storage capacity ranges from GB to TB that can store home & office software.
- Mobile computer : Computers that are designed to be carried around easily about the size of a paper notebook to fit in one hand. a computer based on a microprocessor designed for individuals and bussiness, capable to provide computing power for home & office environment. Storage capacity ranges from GB to TB that can store home & office software.
- Mobile Devices : Very small communication device. a computer based on a microprocessor that contain built-in computing or internet capabilities. storage up to GB that can store mobile applications.
- Embedded computers : A tine computer embedded into a product. Tiny specialized microprocessors installed in smart appliances & automobiles. storage capacity normally in KB
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