Today's session was an introduction to the module and an introduction to computing. We discussed information and its impact.
- We are an information society
- defined by data
- changes in information affect individuals and organizations
- According to thye 2003 Lyman report, humans generate up to 5 exabytes of information per year
- So, as information professionals, we need to understand the techonology that handles this data in order to organize the information to manage and/or prevent information overload.
We look at architectures, not just individual computers.
bricklayer vs. architect: the latter has a broader understanding of the buildings.
So... I don't need to be a programmer and understand the nitty gritty of the technology side. I need to understand the information side and its organization.
We also talked about the levels of representation in computing:
- digital is discrete as opposed to continuous. It's either on or off.
- bit - is represented by either 1 or 0.
- This can be used for numbers/counting, characters, letters/words, etc.
- byte - sequence of 8 bits
- kilobyte - 1024 bytes
- megabyte - 1024 kilobytes
- gigabyte - 1024 megabytes
- bytes are stored on disks or other storage devices.
- store magnetic charges = + ve/ - ve
Agreed upon structures - ANSI (American National Standards Institute)
ASCII - binary numbers to characters
- 7 bit strings
- 128 different characters
- Ex:
- A: 10000001
- J: 10001010
- N: 10001110
- JAN: 100000011000101010001110
- This only uses the US alphabet.
- higher level of encoding than binary numbers
- uses the "office" metaphor
- text file = ASCII characters online
- file names have meanings: jpg, xls, docx, ppt
- files as single entities
- naming conventions
- mark-up for metadata: file type
- file structures
- files as related entities
- named collections in folders/directories
- hierarchal
Document centered approach
- building documents from file
- different media
- related to multiple files
- network/Internet
What is a document?