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8 Cards in this Set
- Front
- Back
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Input devices
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Allows to enter data and instruction into a computer. Eg keyboard, mouse, microphone and webcam.
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Output devices
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Convey information to one or more people. Eg printer, monitor and speaker.
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System unit
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Electronic components of the computer that are used to process data. Eg processor (CPU) interprets and carries out the basic instruction that operate the computer.
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Storage data, media and devices
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Hold data, instruction and information. Devices often function as a source input, they can transfer item from storage to memory. Eg USB, hard disk, optical disc and memory cards.
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Communication device
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Send/transmit, receive data, instruction and information to computer. Eg modem, cables, telephone line and cellular radio.
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Categories of computer
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Personal computer - desktop, notebook and fits on a desk.
Mobile computer/ devices - fits on ur hands, tablet, smartphone/PDA, handheld and e-book. Game console - Nintendo Wii and Sony playstation 3 Servers - control access to the hardware, software and provide centralized storage area for program data Mainframe - large, expensive and powerful Supercomputer - fastest, more powerful and most expensive. |
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Advantages of using computer
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Speed - data, instruction and information such as involve calculation.
Reliability - dependable and rarely break or fail. Consistency - garbage in, garbage out. Storage - transfer data quickly and available to process anytime. Communication - communicate with other computer. |
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Disadvantages of using computer
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Health risks - improper use computer and addiction.
Violation of privacy Public safety - emails from strangers Impact on labor force - human skills are replace by technology Impact to environment - depleting material resources and polluting the environment. |
