CyberSlug Rules!
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- enter system
- get attendance
- submit work
- take lab quiz
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Numbers - ASCII
- 1 byte = 1 character in ASCII
- 1 byte 0..9 single digit
- 2 bytes 2 characters 0..99 two digits
- 4 bytes 4 characters 0..9999 four digits
Numbers - binary math
- 4 bytes = 32 bits = 2^32 ~ 4 billion
- slightly larger than what 4 number characters can represent
Binary Math
- base 2
- 0 ----- 0 0 0 0
- 1 ----- 0 0 0 1
- 2 ----- 0 0 1 0
- 3 ----- 0 0 1 1
- 4 ----- 0 1 0 0
- negative and positive numbers can be represented - use the first bit to indicate - or + (0 or 1)
- Big numbers use scientific notation
- 3 * 10^120 stored as 3, 120 - two numbers