Term 5 - Binary Flashcards
How many bits are there in a single Byte?
8
How many Bytes are in a kiloByte (kB)?
1024
What are the primary colours of light used for coding pixels?
Red, Green and Blue
When we looked at data compression what did RLE stand for?
Run Length Encoding
If two 8 bit numbers are added together and the answer does not fit into 8 bits what is the name for this problem?
Overflow error
Which three factors affect the size of a sound file?
Bit depth, sample rate, number of channels
If binary (BIN) is base 2 and denary (DEN) is base 10 what is hexadecimal (HEX)?
base 16
To the nearest million, how many colours can be made using 24 bit depth for a pixel?
16 million
What is the name for a compression technique which can perfectly re-create the original file when it is decompressed?
lossless
Which colour would be represented by the 24 bit value 11111111 11111111 00000000
Yellow
Which colour would be represented by the 24 bit value 00000000 11111111 11111111
Cyan
Which colour would be represented by the 24 bit value 11111111 00000000 11111111
Magenta
Which colour would be represented by the 24 bit value 11111111 11111111 11111111
White
Which type of sounds would be lost first if the sample rate was decreased during recording?
High frequency sounds
What would cause an image to be ‘pixelated’?
A resolution that is too low
Why is hexadecimal used in computing?
It is more memorable than binary
Put these in order from lowest to highest: Tera, Mega, Giga, Kilo
Kilo, Mega, Giga, Tera
If we compress data compression when we use RLE what is a ‘run’?
Several pieces of data that are the same in a row
Is the computerised version of a sound wave analogue or digital
Digital
In computer images what is colour depth?
The number of bits used to store the colour
What is the binary number 11001100 in denary?
204
What is the largest value an 8-bit binary number can hold?
255 (11111111)
What is the smallest value an 8-bit binary number can hold?
0 (00000000)
Where does the name bit come from?
It means BInary digiT and is formed by compressing parts of the two words.
