Edexcel GCSE Computer Science Topic 2 Data overview quiz quiz

8

15

16

32

$96$

$100$

$104$

$200$

$+128$

$+255$

$-255$

$-128$

-128 to +127

0 to 255

-127 to +128

-256 to +256

Just invert all the bits of the positive value and stop there

Simply add 1 to the binary of the positive value

Reverse the order of all of the bits in the number

Invert the bits of the positive value, then add 1

When the result needs more bits than are available

When the result of the addition comes out as exactly zero

When the two numbers being added are exactly equal

When a binary number is shifted one place to the left

2

4

8

16

$\text{FE}$

$\text{DF}$

$\text{EF}$

$\text{EE}$

64

128

256

1024

sample rate times bit depth times duration

width plus height plus colour depth

resolution divided by colour depth

width times height times colour depth

1024

1000

8

8192

It keeps every single bit of the data so the original can be rebuilt exactly

It is the best choice for program files and important text documents

It permanently removes data so the original cannot be perfectly restored

It always makes the compressed files larger than the original