Test 1 Flashcards
Data
RAW FACTS AND FIGURES
4 DEFINITIONS OF INFORMATION
KNOWLEDGE DERIVED FROM DATA
DATA PRESENTED IN MEANINGFUL CONTEXT
A DIFFERENCE THAT MAKES A DIFFERENCE
DESIRABLE INFORMATION CHARACTERISTICS
ACCURATE TIMELY RELEVANT BARELY SUFFICIENT WORTH THE COST
MOORE’S LAW
OF TRANSISTORS DOUBLE EVERY 18 MONTHS WHICH MAKES COMPUTERS FASTER AND HOLD MORE MEMORY
EXAMPLES OF IS FOLLOWING EXPONENTIAL TREND
PROCESSING SPEED
PIXELS IN DIGITAL CAMERA
COST OF COMPUTING
DATA STORAGE COSTS
SYSTEM
GROUP OF 2 OR MORE INTERRELATED COMPONENTS THAT SERVE COMMON PURPOSE
INTERFACES
WHERE COMPONENTS MEET OUTSIDE WORLD
BOUNDARIES
DETERMINE SCOPE OF THE SYSTEM
HOW DO YOU ANALYZE SYSTEMS?
BY DECOMPOSING
COHESIVE SYSTEM
PERFORM SINGLE TASK
MODULAR SYSTEM
WHEN IT CAN BE DIVIDED INTO SUBSYSTEMS
BLACK BOX
YOU CANT SEE WHATS GOING ON, ONLY THE INPUT AND OUTPUT
WHITE BOX
YOU CAN SEE THE WHOLE PROCESS START TO FINISH
OPEN SYSTEM
BUILT TO INTERACT
CLOSED SYSTEM
NO INTERACTION WITH THE OUTSIDE WORLD
