Important: Use custom search function to get better results from our thousands of pages

Use " " for compulsory search eg:"electronics seminar" , use -" " for filter something eg: "electronics seminar" -"/tag/" (used for exclude results from tag pages)


 
 
Thread Rating:
  • 0 Votes - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Software Crisis pdf
Post: #1

Software Crisis


.pdf  Software Crisis.pdf (Size: 1.99 MB / Downloads: 66)

INTRODUCTION

Developments in software technology continue to be dynamic. New tools and techniques are announced in quick succession. This has forced the software engineers and industry to continuously look for new approaches to software design and development, and they are becoming more and more critical in view of the increasing complexity of software systems as well as the highly competitive nature of the industry. These rapid advances appear to have created a situation of crisis within the industry. The following issued need to be addressed to face the crisis:
• How to represent real-life entities of problems in system design?
• How to design system with open interfaces?
• How to ensure reusability and extensibility of modules?
• How to develop modules that are tolerant of any changes in future?
• How to improve software productivity and decrease software cost?
• How to improve the quality of software?
• How to manage time schedules?

Software Evaluation

Ernest Tello, A well known writer in the field of artificial intelligence, compared the evolution of software technology to the growth of the tree. Like a tree, the software evolution has had distinct phases “layers” of growth. These layers were building up one by one over the last five decades as shown in fig. 1.1, with each layer representing and improvement over the previous one. However, the analogy fails if we consider the life of these layers. In software system each of the layers continues to be functional, whereas in the case of trees, only the uppermost layer is functional.

Procedure-Oriented Programming

In the procedure oriented approach, the problem is viewed as the sequence of things to be done such as reading, calculating and printing such as cobol, fortran and c. The primary focus is on functions. A typical structure for procedural programming is shown in fig.1.2. The technique of hierarchical decomposition has been used to specify the tasks to be completed for solving a problem.

Object Oriented Paradigm

The major motivating factor in the invention of object-oriented approach is to remove some of the flaws encountered in the procedural approach. OOP treats data as a critical element in the program development and does not allow it to flow freely around the system. It ties data more closely to the function that operate on it, and protects it from accidental modification from outside function. OOP allows decomposition of a problem into a number of entities called objects and then builds data and function around these objects. The organization of data and function in object-oriented programs is shown in fig.1.3. The data of an object can be accessed only by the function associated with that object. However, function of one object can access the function of other objects.
Post: #2
Software crisis is a term used in the early days of computer science for the difficulty of writing useful and efficient computer programs in the time required. The software crisis was due to rapid increases in the power of computers and the complexity of problems that could not be addressed. With the increase in software complexity, many software problems arose because existing methods were insufficient.

The causes of the software crisis were linked to the overall hardware complexity and software development process. The crisis manifested itself in several ways:
• Overweight projects
• Projects that are over-executed
• The software was very inefficient
• The software was of poor quality
• The software often did not meet the requirements
• Projects were unmanageable and the code difficult to maintain
• The software was never delivered.

The main reason is that improvements in computing power had outpaced programmers' ability to effectively use those capabilities. During the last decades, several processes and methodologies have been developed to improve software quality management, such as procedural programming and object-oriented programming. However, software projects that are large, complicated, poorly specified and involve unknown aspects remain vulnerable to large and unforeseen problems.
 

Marked Categories : software evolution of ernest tello, software crisis in computer science, software crisis ppt, topics on computer crisis, pdf software crises, software evolution according to earnest telo, software evolution of earnest tello, what is software crisis pdf, software crisis pdf,

[-]
Quick Reply
Message
Type your reply to this message here.

Image Verification
Image Verification
(case insensitive)
Please enter the text within the image on the left in to the text box below. This process is used to prevent automated posts.

Possibly Related Threads...
Thread: Author Replies: Views: Last Post
  tps information technology book pdf download Guest 18 1,106 16-02-2019 09:55 PM
Last Post: [email protected]
  rashtriya madhyamik shiksha abhiyan in hindi pdf Guest 0 0 16-02-2019 07:08 AM
Last Post: Guest
  12th commerce it tps pdf download Guest 0 0 01-02-2019 08:30 AM
Last Post: Guest
  prefabricated structures book pdf download by ganesan Guest 0 0 24-01-2019 09:23 PM
Last Post: Guest
  12th commerce it tps pdf download Guest 0 0 17-01-2019 12:01 AM
Last Post: Guest
  sunstar exam scanner 5th sem cse pdf Guest 0 0 20-12-2018 05:30 PM
Last Post: Guest
  sendriya sheti full information in marathi pdf philes Guest 0 0 03-12-2018 11:36 AM
Last Post: Guest
  principles of inorganic chemistry by puri sharma kalia pdf Guest 3 474 24-11-2018 07:55 AM
Last Post: Guest
  8thsem civil advanced concrete technology sjbit notes pdf Guest 1 0 23-11-2018 01:04 AM
Last Post: Guest
  matlab satellite image processing tutorial pdf Guest 0 0 18-11-2018 09:55 AM
Last Post: Guest
This Page May Contain What is Software Crisis pdf And Latest Information/News About Software Crisis pdf,If Not ...Use Search to get more info about Software Crisis pdf Or Ask Here

Options: