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Intro to Computing
study material for DANTES Intro to Computing
20
Computer Science
Undergraduate 1
04/30/2010

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Cards

Term
Conditional Statements
Definition
IF, ELSE, THEN.. (Eg IF 2+2*3<15 THEN print "yes", ELSE print "no")
Term
Pseudocode
Definition
Standardized, plain English coding language. Always follows order of operations (P.E.M.D.A.S.)
Term
PERT Chart (Program Evaluation and Review Techniques)
Definition
Shows the order in which different tasks must be completed.
Term
Gantt Chart
Definition
Plots out the time allocated to each step in the software development process.
Term
Conversion to new software system: Plunge
Definition
Total and immediate switch to new software.
Term
Conversion to new Software System: Pilot Conversion
Definition
One department uses software to see if they like it.
Term
Conversion to new Software System: Phased Conversion
Definition
One department starts using the new software, then another, then another.
Term
Conversion to new Software System: Parallel Conversion
Definition
Both old and new software are used side by side to compare performance.
Term
Software Development Methods: Waterfall
Definition
Analysis (feasibility study), Design, Implementation (conversion from old to new), Maintenance (updates, troubleshooting, etc.) [ADIM]
Term
Software Development Methods: Prototyping
Definition
Design a prototype, see if it works, make adjustments..final product.
Term
Software Development Methods: Rapid Application Development (RAD)
Definition
Uses computer applications to speed up development process.
Term
Software Development Methods: Object-oriented Development
Definition
Re-usable, preexisting "objects" are used to create a new product.
Term
Communications Protocol
Definition
Standard set of rules so each computer can understand each other.
Term
Asynchronous
Definition
One bit is sent after the other. A START and STOP bit is sent at beginning and end of message. (Telephone lines).
Term
Synchronous
Definition
A clock synchronizes the transfer of data. Very fast.
Term
Full-Duplex
Definition
Send AND receive data at the same time.
Term
Half-Duplex
Definition
Can only send or receive data at one time. Each computer takes it's turn.
Term
Modem
Definition
Modulator/Demodulator. Converts digital signal to analog signal and vice versa. (For sending down phone lines).
Term
Multiprogramming
Definition
More than one program can run at the same time.
Term
Device Manager (I/O Supervisor)
Definition
Controls I/O devices to ensure they don't clash.
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