19-09-2014, 12:16 PM
THE BLACK BOX
[attachment=68167]
ABSTRACT
As the technology progressing, the speed of travelling is also increased. The source to destination became so closer to each other. The main advantage in this field of the air travelling system with the help of airplane. This is the major discovery of technology. But the speed increases, the horror of air crash also introduced. Because at a height of 2000m and above if a plane crashes, it will be a terror for anybody. so to take the feedback of the various activities happen in the plane and record them engineers need a mechanism to record such activities. With any airplane crash, there are many unanswered questions as to what brought the plane down. Investigators turn to airplane flight data recorder(FDR) and cockpit voice recorder(CVR), also known as "black boxes", for answers. In Flight 261, the FDR contained 48 parameters of the flight data, and the CVR recorded a little more than 30 minutes of conversation and other audible cockpit noise.
INTRODUCTION
BLACKBOX is a Flight Data Recorder.
It records specific aircraft performance parameters and conversations in the cockpit
BLACKBOX TESTING.
Black Box Testing is a testing technique where no knowledge of the internal functionality and structure of the system is available. This testing technique treats the system as a black box or closed box. The tester only knows the formal inputs and expected outputs, but does not know how the program actually arrives at those outputs. As a result, all testing must be based on functional specifications. For this reason black box testing is also considered to be functional testing and is also a form of behavioural testing or opaque box testing or simply closed box testing. Although black box testing is behavioural testing, behavioural test design is slightly different from black box test design because internal knowledge may be available in behavioural testing.
ADVANTAGES OF BLACK BOX TESTING
• Efficient when used on large systems.
• Since the tester and developer are independent of each other, testing is balanced and unprejudiced.
• Tester can be non-technical.
• There is no need for the tester to have detailed functional knowledge of system.
• Tests will be done from an end user's point of view, because the end user should accept the system. (This testing technique is sometimes also called Acceptance testing.)
• Testing helps to identify vagueness and contradictions in functional specifications.
• Test cases can be designed as soon as the functional specifications are complete.
DISADVANTAGES OF BLACK BOX TESTING
• Test cases are challenging to design without having clear functional specifications.
• It is difficult to identify tricky inputs if the test cases are not developed based on specifications.
• It is difficult to identify all possible inputs in limited testing time. As a result, writing test cases may be slow and difficult.
• There are chances of having unidentified paths during the testing process.
• There is a high probability of repeating tests already performed by the programmer.
CONCLUSION
From the study of Black Box we derived a information that how the information about aircraft mishap is analyzed and unanswered question is answered.
In this study we discuss about various technology various aspects involved in black box.
[attachment=68167]
ABSTRACT
As the technology progressing, the speed of travelling is also increased. The source to destination became so closer to each other. The main advantage in this field of the air travelling system with the help of airplane. This is the major discovery of technology. But the speed increases, the horror of air crash also introduced. Because at a height of 2000m and above if a plane crashes, it will be a terror for anybody. so to take the feedback of the various activities happen in the plane and record them engineers need a mechanism to record such activities. With any airplane crash, there are many unanswered questions as to what brought the plane down. Investigators turn to airplane flight data recorder(FDR) and cockpit voice recorder(CVR), also known as "black boxes", for answers. In Flight 261, the FDR contained 48 parameters of the flight data, and the CVR recorded a little more than 30 minutes of conversation and other audible cockpit noise.
INTRODUCTION
BLACKBOX is a Flight Data Recorder.
It records specific aircraft performance parameters and conversations in the cockpit
BLACKBOX TESTING.
Black Box Testing is a testing technique where no knowledge of the internal functionality and structure of the system is available. This testing technique treats the system as a black box or closed box. The tester only knows the formal inputs and expected outputs, but does not know how the program actually arrives at those outputs. As a result, all testing must be based on functional specifications. For this reason black box testing is also considered to be functional testing and is also a form of behavioural testing or opaque box testing or simply closed box testing. Although black box testing is behavioural testing, behavioural test design is slightly different from black box test design because internal knowledge may be available in behavioural testing.
ADVANTAGES OF BLACK BOX TESTING
• Efficient when used on large systems.
• Since the tester and developer are independent of each other, testing is balanced and unprejudiced.
• Tester can be non-technical.
• There is no need for the tester to have detailed functional knowledge of system.
• Tests will be done from an end user's point of view, because the end user should accept the system. (This testing technique is sometimes also called Acceptance testing.)
• Testing helps to identify vagueness and contradictions in functional specifications.
• Test cases can be designed as soon as the functional specifications are complete.
DISADVANTAGES OF BLACK BOX TESTING
• Test cases are challenging to design without having clear functional specifications.
• It is difficult to identify tricky inputs if the test cases are not developed based on specifications.
• It is difficult to identify all possible inputs in limited testing time. As a result, writing test cases may be slow and difficult.
• There are chances of having unidentified paths during the testing process.
• There is a high probability of repeating tests already performed by the programmer.
CONCLUSION
From the study of Black Box we derived a information that how the information about aircraft mishap is analyzed and unanswered question is answered.
In this study we discuss about various technology various aspects involved in black box.