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8 Cards in this Set
- Front
- Back
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Computer case |
The computer case is the metal and plastic box that contains the main components of the computer, including the motherboard, central processing unit (CPU), and power supply. The front of the case usually has an On/Off button and one or more optical drives. |
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Desktop case |
A desktop case lies flat on a desk, and the monitor usually sits on top of it. |
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Tower case |
A tower case is tall and sits next to the monitor or on the floor. |
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All-in-one computers |
All-in-one computers come with the internal components built into the monitor. Therefore, there is no need for a separate case. |
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Monitor |
The monitor works with a video card, located inside the computer case, to display images and text on the screen. Most monitors have control buttons that allow you to change your monitor's display settings, and some monitors also have built-in speakers. Newer monitors usually have LCD (liquid crystal display) or LED (light-emitting diode) displays. These can be made very thin, and they are often called flat-panel displays. Older monitors use CRT (cathode ray tube) displays. CRT monitors are much larger and heavier, and they take up more desk space. |
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Keyboard |
A keyboard has a set of alphabetical keys, a set of digit keys, and various function keys. The data entered using the keyboard is in the form of individual keys, words or numbers. |
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Mouse |
Known as a pointing device, it lets you point to objects on the screen, click on them, and move them. The optical mouse uses an electronic eye to detect movement and is easier to clean. The mechanical mouse uses a rolling ball to detect movement and requires regular cleaning to work properly. The cordless mouse is not physically connected to the computer, but uses infrared or radio waves to communicate with the computer. |
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What is a computer? |
A computer is an electronic device that manipulates information, or data. It has the ability to store, retrieve, and process data. OR A computer is an electronic device, operating under the control of instructions stored in its memory. It can accept data (input), manipulate data (processing), produce results (output) from the processing and store the data and results for future use (storage). |
