ICT revision

Digital devices

mainframe computer: a large, powerful computer that can do a lot of complicated jobs quickly and can be used by a lot of people at the same time.

Microprocessor The device that controls what a computer does; it takes data as input, does something with it and provides output

peripheral device equipment that is connected to a computer and is used with; such as a monitor, printer, a mouse and keyboard.

multifunctional devices and convergence

Embedded computing computing hardware that is fixed into position and carries out a specialist task

Physical computing interactive systems that can sense the world around them

Wi-Fi a way of connecting to computers or other electronic devices to a network or the internet by using radio signals rather than wires

Pixel a small dot that helps make up an image

resolutionthe number of pixels used by a screen to display an image

pixelated an effect that creates an unclear image consisting of large individual pixels that are visible to the human eye

multifunction device a device that can preform a range of different functions

convergence when the designs of devices change so that they become similar to one another

2-in-ones tablets computers is a example of a convergence device

a smartphone is a multifunctional device because it can make phone calls and can also be used to take photographs

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software

Firewall a system that protects a computer network from from being used or looked at by people who do not have permission to do so

spreadsheets applications that are used to do calculations. an example would be Microsoft Excel.

database used to enter, edit and search data. an example would be Oracle

Image editing

bitmap a computer image that is stored or printed as an arrangement of bits

vector graphic a graphical image made up of points and lines