ICT

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  • Created by: Lauraa01
  • Created on: 24-12-13 09:57
What is an input device?
An input device is a piece of hardware that is used to enter data into a computer.
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What is an output device?
An output device is a piece of hardware that is used to output data that has been previously entered into a computer
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Name four input devices.
Keyboard, Mouse, Webcam, Microphone
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Name four output devices.
Monitor, Printer, Projector, Speaker
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What is a storage device?
A storage device is a piece of hardware that is used to store data
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What is the file type .doc?
.doc stands for Document and is used with word processing packages such as Microsoft Word
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What is the file type .xls?
.xls is a file extension used on computers running microsoft windows to identify files created in Excel
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What is the file type .pdf?
.pdf stands for portable document format. It is a way to save documents on a computer or send them via email so that any computer can open them
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What is the file type .exe?
.exe stands for executable file. It is a universal standard for windows based computers.
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What is the file type .html?
.html stands for hyper text mark - up language
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What is the file type .jpg?
A jpg is a type of graphics file or extension commonly used for photos and other images on a computer.
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What is the file type .jpeg?
JPEG is a colour image compression technique
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What does .mp3 stand for?
.mp3 stands for 'MPEG-1 Audio Layer 3'
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What is data logging?
Data logging is the collection of data over a period of time
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How does data logging monitor a process?
Data logging typically monitors a process using sensors linked to a computer
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What is remote data logging?
Remote data logging is when readings are stored and brought back to a computer where they are downloaded and analysed
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What is open source?
Open source is a program in which the source code is open to the general public
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What is bespoke software?
Bespoke software is software that is fit to the customers exact requirements. It is really expensive.
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What is generic software?
Generic software is a program used to instruct a computer on how to perform a specified task. It can be used anywhere
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What is a GUI?
GUI - graphic user interface - the user chooses an option usually by pointing the mouse at an icon representing that option
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Advantages of GUI?
Easy to use, don't have to learn complicated commands
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Disadvantages of GUI?
Take up a lot of space on a hard disk, use more processing power than other interfaces
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What is CLI?
CLI - command line interface - allows the user to interact with the computer by typing in commands
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Advantages of CLI?
Doesn't require windows to run, needs much less memory than other interfaces
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Disadvantages of CLI?
Can be confusing if you have never used it before, have to learn a lot of commands
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What is touch screen?
Touch screen is both an input and output device. Input device - it inputs information when you touch the screen. Output device - it delivers information to you
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Advantages of touch screen?
Easy to use, fast working
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Disadvantages of touch screen?
Often freezes, easily breakable
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What is ADC and DAC?
ADC - analogue to digital converter. DAC - digital to analogue converter
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What are word processing packages used for?
Word processing packages are usually used for things lie writing essays, letters or notes as require a lot of writing and not a lot of images
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What is photo editing?
Photo editing allows you to edit and manipulate your photos through a computer
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What are graphics?
Graphics are visual presentations on a surface. They are either to inform, illustrate or entertain people
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What is animation?
Animation is a display of a sequence of images. It creates an illusion
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What is a search engine?
A search engine is a program that you can retrieve data, files or documents from
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What is social media?
Social media is the interactions among people where they create, exchange and share information through the internet
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What is video sharing?
Video sharing is when people are allowed to upload videos to the internet so others can view them. It allows you to upload, view and share videos
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What is web design?
Web design is the planning, creating and updating of websites
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What is an app?
App is an abbreviation for application. They are a way to perform almost any task on your phone or tablet
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What is the data protection act?
The data protection act is a law designed to protect your rights as an individual
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What is a username?
A username is an identity for you to use on a network
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What is a password?
A password identifys that the username belongs to you
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What is malware?
Malware is software that is intended to damage or disable computers or computer systems
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What is a worm?
A worm is a program that makes a lot of copies of itself (works on its own)
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What is a virus?
A virus is a piece of program code that makes copies of itself by attaching itself to another program
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What is anti-virus software?
Anti-virus software detects a virus and warns you that it is there
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What is a modem?
A modem is a device that converts digital data to analogue data
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What is Wi-Fi?
Wi-Fi is a type of network that uses radio channels to connect to a local area network (LAN) or a router linked to the internet
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What is a primary key?
A primary key is a field within a database which enables every record to be uniquely identified
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What is a record?
A record is all the data about one person or one thing
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What is a field?
A field is a single piece of data about one person or one thing
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What does an interface box do?
An interface box converts signals between the sensors and processors
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Name three things computers are now used to control.
Air con and central heating, security systems and burglar alarms, traffic lights
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What are sensors used to do?
Sensors are sued to detect physical quantities outside a computer (e.g. light, temperature or pressure)
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What do sensors do?
Sensors collect data automatically - usually at regular intervals
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What happens to the data from the sensors?
The data can be sent straight away or stored for a period of time
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What needs to be connected in order to process input from the sensors?
In order to process input from the sensors, a device called an 'Analogue to digital converter' (ADC) must be connected
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What is a laptop?
A laptop is a portable microcomputer
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What is a desktop?
A desktop is the working space on your monitor (once computer has booted up)
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Name two advantages of a laptop.
Protable (easy to carry around), small and lightweight
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Name two disadvantages of a laptop.
More fragile, expensive
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Name two advantages of a desktop.
Lots of memory space, fast processors
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Name two disadvantages of a desktop.
Not portable, requires a separate monitor
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What is a database?
A database is a collection of data or info held together in an organised or logical way
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Advantages of a database?
Improved security, reduced updating errors
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Disadvantages of a database?
Complex, if they get damaged it affects all applications
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What is a relational database?
A relational database has more than one table and the tables are linked by using key fields
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One example of a relational database?
A library could have three tables: Customer - a record created when they join. Book - record if the book (details of it). Lending - customers id and books id is stored when the book is borrowed
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What is predictive text?
Predictive text is when words are allowed to be entered by typing a single letter
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What is an eye typer?
An eye typer is when a camera is placed in the computer to focus on the users eye
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Other cards in this set

Card 2

Front

What is an output device?

Back

An output device is a piece of hardware that is used to output data that has been previously entered into a computer

Card 3

Front

Name four input devices.

Back

Preview of the front of card 3

Card 4

Front

Name four output devices.

Back

Preview of the front of card 4

Card 5

Front

What is a storage device?

Back

Preview of the front of card 5
View more cards

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