Introduction to ICT
-Flexibility -Cost effective -Data Storage and Usage -Greater Availability -Globalisation -Communication & Resource Sharing
Advantages:
-Form of Existence -Time of Occurrence -Frequency of Occurrence
How can information be classified?
-Home -Healthcare -Industry -Travel -Education -Commerce -Banking -Government
ICT in everyday life:
-data entered into computers memory -input devices
Input:
-keyboards, printers, scanners, monitors, speakers
Output:
-RAM -Motherboard
Processing:
end users
What are people who use computers called?
Computers Communications Network Knowledge
What are the 3 main components of IT?
Capture Verifying Producing Storage Retrieval Data Update Reproducing Transmitting Generation
What are the 9 major functions of IT?
-Servers (provide services) -Workstations(one user, HW advancements) -Information Appliances (user friendly function playing music) -Embedded Computers (computers that are a part of a machine/device)
What are the computer classes by function?
-Personal Computer (Desktop computers, mobiles, laptops) -Mini computers (Multi user computers) -Main frame computers (used in large institutions such as banks, government/capable of handling and processing large amounts of data quickly MIPS) -Supercomputers (powerful, designed to perform long and difficult calculations e.g weather forecasting, simulations)
What are the computer classes by size?
-Personal (for one user, access to any parts) -Public (restricted to install SW, limited control) -Display (displayed in a shop mainly for preview purposes)
What are the computer classes by usage?
Input, processing, output, storage
What are the four basic operations?
refers to the technologies that provide access to information through telecommunications
What is ICT?
is the use of any computers, storage, networking and other physical devices, infrastructure and processes to create, process, store and exchange all forms of electronic data
What is IT?
is an electronic system that under a programs direction performs four basic operations
What is a computer?
a list of instructions that tells a computer how to perform the four basic operations created by programmers using a programming language
What is a program?
a system to designed to produce and handle the information needed for successful management of processes
What is an information system?
a way of transmitting messages networks of sending/receiving messages, wires and other equipment
What is communication?
data which has been processed into a useful format
What is information?
the knowledge and collection of techniques, methods and procedures to produce goods, services and accomplish objectives
What is technology?
1940
When was the first generation of computers?
-Hard drives -CD/DVD -Floppy Drive
Storage:
-Training -Security -Technology Dependent -Flexibility (things change) -Limitations
Disadvantages:
