Binary/Hexadecimal
Hexadecimal is base what?
16
001 + 001
010
GiB means what?
Gibibytes
What is the smallest element in a bitmap image?
PIXEL
A file is 5 KB. How many bytes is this?
5000 Bytes
what is the largest 6 bit Binary number, in Decimal
63
What does binary digit stand for?
BIT
Which is Bigger
1 MB or 1 MiB
1MiB
What is the difference between a bitmap and a vector image?
Bitmap uses pixels; Vector uses mathematical formulas.
A 5 MB image is compressed using a lossy compression algorithm with a compression ratio of 10:1. What is the file size of the compressed image?
0.5MB
Hexcidecimal number 34 in Decimal
52
The Register is 8 Bits
00000010
Shifted left 2 Places
00001000
8,000,000 bytes or 8 Million Bytes
Describe two advantages of using vector graphics over bitmap graphics.
Vector images can be scaled without loss of quality and
generally have smaller file sizes.
A song is 3 minutes long and has a sampling rate of 44.1 kHz and a bit depth of 16 bits. What is the approximate file size in MB?
~10 MB
Assume you have an 8 Bit Register what is
10001111
+
11110001
Overflow Error
Perform the binary subtraction: 11011 - 1010
10011
what is TiB in powers of 2
2^40
Explain how sound is represented digitally.
Sound is Captured using what?
Sample
Name two factors that affect the file size of an image
Resolution, color depth, file format, compression
covert the following Binary into Hexadecimal
1111000011001101
F0CD
What is the difference between a bit and a byte?
A bit is a single binary digit (0 or 1); a byte is a group of 8 bits.
A storage device has a capacity of 1 TB. How many 100 KB files can it store?
10,000 files
What does Pixel stand for?
Picture Element
Explain the difference between lossy and lossless compression. Give examples of file formats that use each.
Lossy: JPEG, MP3; Lossless: PNG,GIF