Tuesday, September 13, 2011
reading:
lecture book, ch 1, section a
hw: quickcheck at the end of the section
how do we store numbers?
base 2 numbers
decimal = base 10 numbers
binary = base 2 numbers
how do we store letters?
ASCII -
http://www.asciitable.com/
extended ascii
there is also unicode
A
http://www.ssec.wisc.edu/~tomw/java/unicode.html
nibble = 4 bits
word = 2 bytes
dword = 4 bytes
kilobyte = 1024 bytes (2^10)
megabyte = 2^20 (1024 kilobytes)
gigabyte = 2^30
trilobite = extinct marine arthropod
terabyte = 2^40
http://en.wikipedia.org/wiki/Terabyte
try converting the following binary to decimal:
101101
try converting 542 into binary
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Kelly Gutierrez
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