csc 175 slides - dr. gary locklair cs majors and minors student-faculty get-together thursday 9...

CSC 175 Slides - Dr. Gary LocklairCSC 175 Slides - Dr. Gary Locklair

CS Majors and Minors

Student-FacultyGet-TogetherThursday9 March11:30am - 1:00pm, S118B


Assignments

PowerPoint prototype due Fridayplace on M: drive


Application Packages



pre-written set of effective algorithms packaged for use on a particular type of computer



are machine language code

created in HLL and compiled into ML (as we did with CodeWarrior)



is specific for a particular kind of computer



Each different type of computer has its own unique CPU

“PC” “Mac”



Each different type of computer has its own unique CPU



“PC” type uses Intel or AMD CPU

“Apple Mac” type uses Motorola or

IBM CPU



Therefore the same ML can’t be executed on two different types of CPUs

Each unique CPU has its own unique ML



The same HLL could be translated into ML for two different CPUs using …different translation S/W.

Create Application in a HLL



C++ HLL instructions

CodeWarrior for PC

CodeWarrior for Mac

Intel CPU ML Motorola CPU ML

SAME

DIFFERENT



1. Goal - solve user’s

problem

Goal and Purpose



hardware

2. Purpose - allow a userto easily harness theproblem-solvingcapability of the …



No, but applications are a double-edged sword...

Does a user need to know details?



“For the Word of God is living and active. Sharper than any double-edged sword … it judges the thoughts and attitudes of the heart.” Hebrews 4:12



(i) Application protects …(ii) Application hides ...

Double-edged sword…



1. Data (nouns)provided by user

2. Instructions (verbs)provided by

application

Separation of Data and Instructions



… different info output.

An application is generalpurpose as you can reuse the same algorithms (instructions) on different data producing …



General purpose …

0

20

40

60

NFCWest

AFCSouth

NFCNorth

NFCWest

20.4

AFCSouth

30.6

NFCNorth

45.9

Power Rank0

20

40

60

NFCWest

AFCSouth

NFCNorth

NFCWest

43.9

AFCSouth

12.1

NFCNorth

37.7

1st Qtr



programmers use fields as placeholders for data (similar to ‘pronouns’).

To create algorithms without data,



Categories of S/W Apps(review)

1. Application orIntended Use

2. Legal License(Friday)



a. Ready to Runex: PowerPoint

user supplies data

3. Functionality



Ex: Exceluser must supply data& additional algorithms

user is really programming

b. S/W Development Tool



User/programmer must understand how to solve the problem



contrastready-to-runversussoftware development tool


Ready-to-run

Level 2 problem solvingunderstand problemchoose correct toolprovide inputinterpret output


Software Development tool

Level 1 problem solvingunderstand problemrequirements (outputs)specifications (inputs)algorithms


Peter Coffee articles

Software makes uncommon senseSoftware Tools perform just seven simple functions

csc 175 slides - dr. gary locklair cs majors and minors student-faculty get-together thursday 9...

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