Account It is the process of keeping track of a user's activity while accessing a network resources protected by username and password.
Algorithm An Algorithm is a logical procedure for solving problems. It is the first step in preparing computer programs.
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ALU The Arithmetic Logic Unit is the part of the processor where the system processes the logical and the arithmetical Operations.
BUS The bus is a communication channel that allows peripheral components of an electronic system to "talk" to each other by exchanging information or data.
Cache The cache memory is a temporary, highspeed type of memory located in the CPU which data can be quickly stored and retrieved on demand. Usually, the most frequent used data is stored in the cache.
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COMPUTER SPEAKERS Computer speakers are essential for PCs. While the external speakers are connected to the PC, the lower fidelity builtin speakers are disabled.
CPU It is the hardware within a computer that carries out the instructions of a computer program by performing the basic arithmetical, logical, and I/O operation of the system.
CU The Control Unit is a part of CPU that coordinates the connections and the communications between input/output Devices and control all the Operations of the machine.
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DISPATCHER It is the module that gives control of the CPU to the process selected by the shortterm scheduler.
Embedded System It is a specialpurpose system in which the computer is encapsulated by the device it controls.
Host This is a computer that acts as a server for other computers on a network. It can be a web server, and email server, an FTP server, etc. 4
iPhone The iPhone is a line of internet and multimediaenabled smartphones, the first ever made, marked by Apple.
iPod Touch The ipod touch is a portable music and video player as well as a handheld game console, designed and marketed by apple inc. The ipod touch adds the multi touch graphical user interface to the ipod line. 5
Keyboard It’s an input device that is used to type data into the computer. It is the most common input device.
Link In hypertext systems, such as the World Wide Web, a link is a reference to another document. Such links are sometimes called hot links because they take you to other documents when you click on them.
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Mouse It's an input device that captures the movement of the hand and transforms it into an electric impulse that the computer decodes to move the cursor on the screen. There are mainly two types : a mechanical mouse has a wheel on the underside whereas an optical mouse has a lightemittingdiode and photodiodes which detect the movement relative to the surface under the mouse.
Monitor It's an output device that provides a graphical interface between the computer and its user. Monitors can be connected to the computer via VGA, DVI or HDMI cable. Specifically, monitors are connected to the computer’s video card where the output data is generated.
Operating system Group of programs that permit the communication between user and the machine
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Memory unit Device that is used for storing data and instructions for processing.
Plotter The plotter is a computer printer for printing vector graphics. A plotter gives a hard copy of the output. It draws pictures on paper using a pen. Plotters are used to print designs of ships and machines, plans for buildings and so on.
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RAM The Random Access Memory is the main memory of the computer. It increases exponentially the performance of the system. A randomaccess device allows stored data to be accessed directly in any random order.
ROM Readonly memory is type of computer memory in which data has been prewritten. Once data has been written into a ROM chip, it cannot be modified and it can only be read.
SMARTPHONE It is a mobile phone built on a mobile operating system, with more advanced computing capability and connectivity than a feature phone.
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SOFTWARE Computer software is a set of instructions that the machine reads in order to perform the specific tasks. Software is categorized into system software and application software. The system software consists of the Operating System and application software is what the user interacts with.
Tablet A tablet is a slim portable computer with touch screen capability. They are currently very popular and fashionable because they can be carried around very easily and are like small computers.
Hardware The hardware is the physical part of the computer.The hardware components of the PC are for example the motherboard and cpu.
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USB Flash Drive
A USB (universal serial bus) flash drive is a popular way to store digital information. Flash drives are an easy way to share data. USB sticks have some advantages over other portable storage devices. They are physically much smaller and more rugged than floppy disks
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VIDEOCARD A video card is an expansion card which generates a feed of output images to a display.
WEBCAM: A webcam is a videocamera that feeds its image in realtime to a computer or computer network.
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Created by Class 4AI 2013/2014 ISIS GALILEI GORIZIA ITALY