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Worksheets8 CS Homework 2
Total questions: 51
Worksheet time: 43mins
A bitmap image is made up of
Pixels
Colours
Sounds
Samples
Additional information about the image file is stored as
Metadata
Properties
File summary
Pixels
Dimensions
Colour depth
Resolution
Megapixels
More pixels will be used to make up the image
More colours can be displayed
More binary will be required to create the image
Reduce the number of colours used per pixel (colour depth)
Reduce the dimensions of the image
Compress the file using a lossy compression file type
Metadata is the smallest element of an image.
Metadata is the number of bits used to store the colour of a pixel.
Metadata refers to information stored about an image.
Metadata is a lossy compression file format that allows for very compact file sizes.
How does a higher picture resolution effect quality & file size?
Quality is improved as there is more detail, file size is larger
Quality is worse, as there is less detail but a smaller file size.
It carries out the calculations in the CPU.
Stores currently used data close to the CPU so instructions can be fetched faster.
Controls the movement of data around the CPU during the fetch-decode-execute cycle.
What is the job of the cache?
It carries out the calculations in the CPU.
Stores currently used data close to the CPU so instructions can be fetched faster.
Controls the movement of data around the CPU during the fetch-decode-execute cycle.
What is the job of the arithmetic logic unit?
It carries out the calculations in the CPU.
Stores currently used data close to the CPU so instructions can be fetched faster.
Controls the movement of data around the CPU during the fetch-decode-execute cycle.
What happens at the decode step of the fetch-decode-execute cycle?
The higher the clock speed the more instructions are processed at the same time.
The higher the clock speed the more fetch-decode-execute cycles it can perform per second.
It will make loading program slower.
By being able to carry out more calculations in a period of time.
By being able to store more recently used instruction inside the CPU for quicker access times.
By not needing to use the RAM to store any data or instructions.
Which of the following CPU's is more likely to have better performance:
3 GHz Quad Core CPU because it will process four instructions at the same time.
3 GHz Dual Core CPU because it will process two instructions at the same time.
Is this device Input or Output?
Is a microphone an Input or Output device?
Is a monitor an Input or Output device?
Is a mouse an Input or Output device?
Is a projector an Input or Output device?
Is a touch screen an Input and/or Output device?
Is a speaker an Input or Output device?
Is the motion sensor on a drone an Input or Output device?
What is the the definition for allowing the user to put data into the computer?
Input Device
Output Device
What is the the definition for a computer sending data to devices?
Input Device
Output Device
What does volatile mean?
Data is lost when the power is turned off
Data is NOT lost when the power is turned off
Which type of memory is used in a game cartridge for a Nintendo Switch?
RAM
ROM
Which type of memory is used to store the OS, programs and data in use by the CPU?
RAM
ROM
Label this computer system diagram.
Storage
Input
Output
Process
Memory
State the hexadecimal representation for the binary number 0011 1101 = (a)
0
1
4
8
What does 5F equal in denary? (a)
Match the following
11
B
12
C
14
E
0
0
7
7
State the hexadecimal representation for the binary number 1101 0101 =
(a)
