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Computing System Fundamentals
IB Computer Science JAVA
14
Computer Science
12th Grade
12/09/2008

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Cards

Term
Machine Instruction Cycle
Definition
Fetch, Decode, Execute, Store
Term
Buffer
Definition
Memory that holds information waiting to be used
Term
Virtual Memory
Definition
Acts like RAM but is in secondary storage to handle overflow from the RAM
Term
Vector Graphics
Definition

Graphics that don't pixelize no matter how stretched they are. They are just mathematical representations

Term
LAN
Definition
Network which is small and normally restricted to one building, no external communication is required
Term
ASCII
Definition
A code for representing English characters as numbers (0-127)
Term
Operating Software
Definition
Collection of programs which provides a user interface and allows for multi-tasking.
Term
OCR
Definition
The process of using reflected light to read characters on a page.
Term
LCD
Definition
One of the more common screens today, found in devices of all kind.
Term
Register
Definition
Temporary storage locations capable of holding just one word
Term
Word
Definition
Traditionally 8-bits, defined by the CPU.
Term
Primary Memory
Definition
Used to store currently executing programs and their data. Examples include RAM and ROM.
Term
Sequential
Definition
Access which is in an order and has to go one-by-one.
Term
WIMP environment
Definition
Used by most modern operating systems, crucial parts of a GUI OS
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