TOPIC 14,15,16 Flashcards
Some presentations are interactive and allow the user to navigate to particular slides:
a. Describe what is meant by a hyperlink.
A hyperlink is an image, button or piece of text which can be clicked on to open a new slide or file.
Hotspots are a type of hyperlink. What is a hotspot?
A hotspot is an image which acts as a hyperlink – (also called a graphical hyperlink)
Presentations can be made more interesting by using slide transitions and animations:
a. What is a slide transition?
When a presentation moves from one slide to the next, this is called a transition.
What is an animation?
Animation means getting some of the content in a presentation to move.
What is a template?
It is a background that has already been designed by the computer
Give 1 advantage of using a template.
Using these can save time allowing the user to concentrate fully on the content of the presentation.
What is a Narration
Speech can be recorded on each slide in a presentation using a microphone.
Give 2 advantages of using presentation software.
1) Presentation software can make the user look more professional.
2) More exciting than a simple word document or hand written presentation
2 disadvantages of using presentation software.
1) Takes quite a bit of time to create a complete presentation
2) Some features such as animations and backgrounds can distract the audience
When used in the context of computer screens and televisions, what is meant by the term resolution?
Computer screens are also known as monitors or VDUs (Visual Display Units). Screens can come in different sizes – over 200-inches if you’ve got enough cash to splash. Modern computer screens are usually one of two different types:
Give 2 advantages of using a graphics tablet instead of a mouse.
1) Can draw easier because its like using a pencile and papper
2) Can be used to capture handwritten signatures
Apart from price, give 1 advantage and 1 disadvantage of an 8 megapixel camera compared to a 14 megapixel camera
Advantage
1)However, higher resolution pictures will use more camera or computer memory.
Diadvantage
2)The higher the resolution (the more pixels per inch) the clearer the picture will be.
What does MIDI stand for?
Musical Instrument Digital Interface.
What is MIDI?
It is a way of connecting musical instruments to a computer
Give 2 uses of microphones connected to a computer.
Talk over the internet
Record sound or music
Why are touch screens used in public places?
To help people if they get lost or want to go somewhere because they are used as information points in shopping centres or railway and bus stations.
What is a plasma screen?
Plasma screens are also flat screens. They tend to be larger than TFT/LCD screens and are used in reception areas or for videoconferencing.
What is a screen resolution
Screen resolution is measured in pixels per inch. The more pixels per inch, the sharper and clearer the picture.
Presentations and websites can contain multimedia. Apart from text, name 3 other multimedia techniques you might see on a presentation or website.
Image,Music and videos
Why are multimedia techniques often used in education?
Multimedia can be useful in education as it caters to different learning styles.
What is digital video camera
digital video cameras capture video digitally onto DVD or a hard drive instead of onto video tape and be easily edited.
What is a webcam
A webcam is a digital camera connected to a computer.
What is a megapixel
When a digital camera takes a picture, the image is stored as millions of dots called pixels.
What is an input device
A device that can be used to insert data into a computer e.g mouse
What is an output device?
Its used to transfer data out of the computer e.g a monitor
What is a storage
A pieace of computer equipment on which information can be stored on
What is backing storage
Backing store is where files, images, videos, etc, can be saved. It includes:Memory Cards – commonly used in mobile phones or digital cameras
Name one input device that can be used to draw an image.
Graphics Tablets
Give the name of the type of graphic that is stored by a digital camera.
Bitmap
Explain what is meant by a bitmap graphic.
Images made up from thousands of dots called pixels in a grid.
Explain what is meant by a vector graphic.
They are made up of many individual, scalable objects e.g. squares, lines,
circles, curves and fonts
Give two advantages of using vector graphics rather than bitmaps.
1) Smaller files and they can download quicker.
2) When enlarged its not blury
Give one advantage of a bitmap over a vector image.
is that they’re unsuitable for producing photo quality images.
what is Anti-aliasing.
Diagonal lines in a bitmap image can appear jagged. Anti-aliasing is the process of smoothing out those jagged edges.
What is meant by the term ‘optimization’ of an image
Optimising an image means reducing the size of an image for use on a website or presentation.
Why is optimization important
saves memory and results in faster uploads and downloads
Give one advantage and one disadvantage of using a high megapixel camera.
advantage
faster upload and download
disadvatage
reduce quality
A website designer would like to use a background for a graphic they would
like to include on each page as a logo. They have a choice of the following backgrounds:
Transparent
White
Colour
a. Which background from the above list would use the least memory.
b. Before the graphic can be used, it needs to be edited using standard
tools. Describe two standard tools for editing graphics and for each describe what changes to the graphic they can be used for.
a) Transparent
b) Zoom allows you to magnify and image on the screen. If you zoom in far enough, you can edit individual pixels.
Selection – you can select all or part of an image for editing.
name 2 common image file formats and say what they are
PNG - Use PNG when you need smaller file sizes with no loss in quality.
PNG - Use PNG when you need smaller file sizes with no loss in quality.
