Bits and Bytes

Question 1

Bit

Answer 1

• smallest unit of storage
• stores just a 0 or 1
• chip uses electricity 0/1 states
• hard drive uses spots N/S magnetism 0/1 states
• 8 bits = 1 byte

Question 2

Patterns

Answer 2

• n bits = 2^n patterns
• 1 byte = 8 bits = 256 patterns
• each byte represents a different combination of 0’s and 1’s
• applies to each individual RGB value ranging from 0-255

Question 3

Kilobyte

Answer 3

1 KB = 1 thousand bytes

Question 4

Megabyte

Answer 4

• 1 MB = 1 thousand KB = 1 million bytes
• 1 MB = 1 min of MP3 audio

Question 5

Gigabyte

Answer 5

1 GB = 1 thousand MB = 1 billion bytes

Question 6

Terabyte

Answer 6

1 TB = 1 thousand GB = 1 trillion bytes

Question 7

How many different values can be stored in 1 bit?

Answer 7

2

Question 8

How many bits are there in one byte?

Answer 8

8

Question 9

One byte can hold a value from 0 up to what maximum value?

Answer 9

255

Question 10

4000 kilobytes (KB) is approximately equal to how many megabytes (MB)?

Answer 10

4

Question 11

Suppose you have 10 image files, each taking up 300 KB. About how many MB of space do they take up overall?

Answer 11

3

Question 12

Suppose you have four 500 MB hard drives plus one 2 GB flash drive. How many GB of capacity is this overall?

Answer 12

4

Question 13

Suppose we have a video camera that produces video data at the rate of 2 GB per hour. Recording for 15 minutes creates about how many MB of data?

Answer 13

500