WorksheetsData Representation (Computer science)
Total questions: 21
Worksheet time: 13mins
Convert Binary into Denary:
0110 1100
108
107
106
109
Convert Denary into Binary:
254
1111 1100
1110 1111
1010 0101
1111 1110
Hexadecimal number system is a base (a) system
Convert Binary into Hexadecimal:
1011 1110 0001
CE2
6ED
BE1
9G2
Convert Hexadecimal into Binary:
45A
0100 0101 1010
1011 1111 0000
1001 0011 0110
0100 0101 1011
Convert Hexadecimal into Denary:
45A
1234
4321
1114
6969
Convert Denary into Hexadecimal:
2004
DE4
7D4
BE4
65D
A MAC address is usually made up of how many bits?
48
32
64
128
2 types of IP addresses?
IPv4 and IPv6
IPv4 and IPv8
IPv3 and IPv6
IPv9 and IPv10
Add the 2 Binaries:
0010 0111
and
0100 1010
1001 0101
0111 0001
1011 1111
0001 1000
Shift this Binary 3 places left:
0001 0101
1010 1000
1000 1010
0101 0100
0000 1111
Convert negative binary numbers in two's compliment format into Denary:
1001 0011
-246
-109
-69
-108
Convert negative denary into Binary in two's compliment format:
-67
1011 1101
1011 1111
1010 1111
1100 0011
Sound waves are analogue data. Computers cannot work with analogue data. So what is need to be done in order for computers to store sound waves.
Sound waves need to be sampled.
Can do this by ADC
(Analogue to Digital Converter)
Sound waves need to be recorded.
Sound waves need to change frequency. By SWFC
(Sound wave to frequency converter)
Sound waves cannot be stored in computer from external sounds.
What is meant by sampling resolution (bit depth)?
The number of bits per sample.
The number of bytes per sample.
The number of pixels per sample.
The number of data per sample.
Bitmap images are made up of (a)
The number of bits used to represent each color is called the (a)
What is an Image Resolution?
Number of pixels in an image.
Number of bits in an image.
Number of bytes in an image.
Number of data in an image.
Main drawback of high resolution images?
Increase in file size
Increase in pixels
The quality of Image.
No drawbacks.
A (a) is the basic unit of all computing memory storage terms.
File size of an image is calculated as:
Image resolution (in pixels) x colour depth (in bits)
Sample rate x sample resolution x length of sample
Image resolution + colour depth
Image resolution - colour depth
