Flashcards
output, output devices and media
Cards in this deck (21)
- 1Output, output devices and media.monitors have the advantage of being able to display a moving image rather than just the static ones that can be produced by a printer.
- 2CRT MonitorShort for Cathode-Ray Tube, a CRT is the electron beams within a monitor that move across your screen either interlaced or non-interlaced hitting phosphor dots on the inside glass tube. The picture is an example of the inside of a computer monitor that shows the CRT connected to the screen.
- 3TFT MonitorShort for thin film transistor, a type of LCD flat-panel display screen, in which each pixel is controlled by from one to four transistors. The TFT technology provides the best resolution of all the flat-panel techniques, but it is also the most expensive. TFT screens are sometimes called active-matrix LCDs.
- 4Large Displays: Digital Projectors.A digital projector, also called a digital projection display system, is a specialized computer display that projects an enlarged image on a movie screen. Such devices are commonly used in presentations. There are two main types of digital projection display systems.
- 5Plasma ScreensA flat display screen using an array of cells containing a gas plasma to produce different colours in each cell.
- 6Interactive Whiteboardsa smooth, glossy sheet of white plastic that can be written on with a colored pen or marker in the manner of a blackboard.
Computers.. Also called interactive whiteboard. an interactive display screen that is connected to a computer and allows for viewing, input, and collaboration by multiple users:
A whiteboard can enhance classroom instruction.
- 7Small Displays: Mobile Phone Screens..
- 8PDAsShort for personal digital assistant, a handheld device that combines computing, telephone/fax, Internet and networking features. A typical PDA can function as a cellular phone, fax sender, Web browser and personal organizer. PDAs may also be referred to as a palmtop, hand-held computer or pocket computer.
- 9Printers: Laser Printersa printer linked to a computer producing good-quality printed material by using a laser to form a pattern of electrostatically charged dots on a light-sensitive drum, which attract toner (or dry ink powder). The toner is transferred to a piece of paper and fixed by a heating process.
- 10Inkjet PrintersAn inkjet printer is a computer peripheral that produces hard copy by spraying ink onto paper. A typical inkjet printer can produce copy with a resolution of at least 300 dots per inch ( dpi ). Some inkjet printers can make full color hard copies at 600 dpi or more. Many models include other devices such as a scanner , photocopier , and dedicated fax machine along with the printer in a single box.
- 11multi-functional Printers,
- 12what are some examples of system software?Microsoft windows and apples mac os x.
- 13application softwaresoftware with which users process text, numbers, sill and moving images and sound.
- 14word processingWord processing software is defined as a computer program that lets you type words or text which shows up in a virtual "document" on your computer screen which can, in turn, be printed or sent electronically. Microsoft Word is an example of word processing software.
- 15templates and wizardsA template is a ready made blank document, with placeholders for items like text and graphics.
A wizard is a feature in a package that guides you through a complicated task. A popular use of wizards in general purpose packages is to take you, step by step, through the process of setting up a document. This wizard guides you through the stages involved in setting up a desktop publishing document. - 16threats to ICT systemlost or damaged during a system crash - especially one affecting the hard disk
corrupted as a result of faulty disks, disk drives, or power failures
lost by accidentally deleting or overwriting files
lost or become corrupted by computer viruses
hacked into by unauthorised users and deleted or altered
destroyed by natural disasters, acts of terrorism, or war
deleted or altered by employees wishing to make money or take revenge on their employer - 17Keeping data securemaking regular backups of files (backup copies should be stored in fireproof safes or in another building)
protecting yourself against viruses by running anti-virus software
using a system of passwords so that access to data is restricted
safe storage of important files stored on removable disks, eg locked away in a fireproof and waterproof safe
allowing only authorised staff into certain computer areas, eg by controlling entry to these areas by means of ID cards or magnetic swipe cards
always logging off or turning terminals off and if possible locking them
avoiding accidental deletion of files by write-protecting disks
using data encryption techniques to code data so that it makes no apparent sense - 18Online bankingWhen you bank online, after you’ve logged in, you will notice that the http in the address bar has changed to https. This indicates that a secure connection between your computer and the bank's computer has been established. Data sent between the two computers is encrypted so that anyone trying to intercept your data will receive meaningless data. The data can only be decrypted into readable data by using a key that is known only to the two computers - yours and the bank's.
- 19ROMROM is memory that cannot be changed by a program or user. ROM retains its memory even after the computer is turned off. For example, ROM stores the instructions for the computer to start up when it is turned on again.
- 20RAMRAM is a fast temporary type of memory in which programs, applications and data are stored. Here are some examples of what's stored in RAM:
the operating system
applications
the graphical user interface (GUI)
If a computer loses power, all data stored in its RAM is lost. - 21—
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- Flashcards on output, output devices and media, created by Jagoda Taflinska on 08/03/2017.
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- Jagoda Taflinska
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