Explosion of Bits•Everything is digitized – can store every communication generated by humans•Government and other institutions of society are deciding how to use all this digitized information.•Once stored – easy to duplicate instantly•Privacy no longer guaranteed (private and public video cameras, photos, etc.)

•How easily do you give up privacy?

ITEC 102

Computing Math•Bits 0/1, T/F, on/off•8 bits in a byte•Kilobytes (103 ), megabytes (106 ), gigabytes (109 )•Binary (base 2), octal (base 8), and hexadecimal (base 16)•Converting between the bases. Binary to octal – group by 3. Binary to hex – group by 4•Converting from binary, octal, and hex to decimal - expand

Megabyte:• 1 minute of 128 kb/s of MP3 compressed music•6 seconds of uncompressed CD audio•500 page/ 2000 chars/page book

ITEC 102

Boolean Truth TablesNOT operation – proposition value is invertedAND operation – All proposition values must be true for a true expression OR operation – At least one proposition value must be T for a T expression _P | Q | P | P ^ Q | P V QF F T F FF T T F TT F F F TT T F T T

ITEC 102

The Koans of Bits1. It’s all just bits - at the lowest level (pictures, words, etc.)2. Perfection is normal – error detection and correction3. There is want in the midst of plenty – if it cannot be found quickly it

is as though it does not exist.4. Processing is power – Moore’s law (IC density doubles every 2 years)5. More of the same can be a whole new thing – exponential growth

gets big fast.6. Nothing goes away – once stored can be stored forever.7. Bits move faster than thought – hard to manage dispersion of

information.

Information Technology is neither good nor bad – its’ how it is used that must be considered ethically.

ITEC 102