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Worksheets3. Hardware - Input & Output Devices: Computer Science CIE IGCSE
Total questions: 51
Worksheet time: 31mins
Give an example of an interactive whiteboard
Whiteboard pen
Virtual whiteboard
Concept whiteboard
Physical whiteboard
What sort of wire does an interactive whiteboard connect with?
USB
Ethernet
5V
Earth
What actions does an interactive whiteboard allow?
Handwriting
Diagrams
Moving objects around screen
Clicks
Videos
What does handwriting recognition do?
Recognise handwriting
Turn handwriting into text
Tell which user is writing
Predict the next sentence
What is an interactive whiteboard used with?
computer
projector
eBeam stylus
USBs
Pen
What does an interactive whiteboard display on a large screen?
A picture
A video
A computer monitor
A computer
What are advantages of interactive whiteboards?
Versatile
Good for classrooms and businesses
Cheap
Easy to use
What are disadvantages of interactive whiteboards?
Must be calibrated
Can be imprecise
Not used widely
Have to have a projector
Are microphones analogue or digital?
Analogue
Digital
What are controlled by speech input?
Games consoles
Smart TVs
CCDs
Electronic fridges
What are advantages of microphones?
Allow use of speech recognition
Great for disabled computer users
Very accurate sound recording
Easy to use
What are disadvantages of microphones?
Inaccurate sound recording
Sound recognition systems must be trained
Difficult to use
Expensive
What are the 3 types of printer?
3D printer
inkjet printer
Virtual printer
Keyboard printerprinter gifprinter gif
fdsa
Laser printer
What do printers produce?
paper
hard copies
ink
What cartridge colours do printers use?
Cyan
Magenta
Black
Yellow
Red
What is the most common home printer?
Inkjet
Laser
3D
What move the cartridges across the page in an inkjet printer?
Print head
Cartridge holder
Toner hopper
Stepper motor and belt
What does mixing CYMK produce?
Darker colours
Lighter colours
What does the print head consist of?
Paper
nozzles spraying ink droplets
cartridges
What do inkjet printers use to print an image?
Tiny dots
lines
Squares
they print the whole image at once
What is print resolution measured in?
DPI
PPI
DIP
PID
What does DPI stand for?
Digital Interface Program
Dots per inch
Dry powdered inhaler
What does a higher DPI mean?
Higher resolution
lower resolution
What do laser printers use to print with?
Toner
Ink
What do laser printers use to produce the printout?
Static electricity
Ink ejecter
Piezzoelectric
Thermal bubble
Laser printers print a page...
All in in one go
Line by line
What is special about the surface of the drum in a laser printer?
Paper fits exactly around its circumference
It is made of xenon
2 sheets of paper can fit around it
What is the printer driver?
A small piece of software used in the back of the user's OS that ensures that data is in the correct format for your make and model of printer.
Short-term memory - the printer's RAM
What is the printer buffer?
A small piece of software used in the back of the user's OS that ensures that data is in the correct format for your make and model of printer.
Short-term memory - the printer's RAM
What charge is the printer drum given?
Positive
Negative
What charge is the printer drum given where the laser beam is scanned across it?
Positive
Negative
What charge is the toner?
Positive
Negative
What charge is the paper?
Positive
Negative
Fuser = heated rollers
true
false
What are advantages of inkjet printers?
Cheap to buy
Cheap to run
Excellent image quality when using photographic paper
Excellent image quality on any paper.
What are disadvantages of inkjet printers?
Expensive to run (lot of ink required)
Expensive to buy
Image quality poor on ordinary paper
Difficult to print double-sided (duplex)
Slow
What are advantages of laser printers?
Cheap to run
text printing excellent
Cheap to buy
Very fast
Image printing excellent
What are advantages of laser printers?
Large paper tray
Large toner cartridges
Large
Easy to use
What are disadvantages of laser printers?
Expensive to buy
Image quality poor compared to inkjet
Large and bulky
Difficult to use
Expensive to run
What sort of manufacturing is 3D printing?
Additive
Repetative
Discrete
Batch
What materials are used by a 3D printer?
Acrylic
Polymer
Plastic
Powdered resin
Powdered stone
What materials are used by a 3D printer?
Powdered metal
ceramic
paper
wood
paint
Objects in digital files have to be split into layers before being printed
True
False
Are 3D printers designed for mass production?
No
Yes
Give examples of uses of 3D printing
prints tools
replacements of missing parts
replicas of fossils
clothes
prothetic limbs
Give examples of uses of 3D printing
exact items to allow for precision reconstructive surgury
lightweight aerospace products
making parts for items no longer in production
computer parts
printers
what are 2 types of 3D printing?
Direct
Binder
Prosthetic
Replica
Immediate
uses inkjet technology - the print head moves up, down, back, and forth
Direct
Binder
Uses 2 passes per layer - one spraying powder, the other glue
Direct
Binder
How thick are the layers used in 3D printing? (in mm)
(a)
What does the time taken to 3D print something depend on?
layer thickness
material used
size of object
speed of printer
which type of 3D printing is used
