An architectural pattern is a description of element and relation types together with a set of constraints on how they may be used. A pattern can be thought of as a set of constraints on an architecture-on the element types and their patterns of interaction-and these constraints define a set or famiRead more
An architectural pattern is a description of element and relation types together with a set of constraints on how they may be used. A pattern can be thought of as a set of constraints on an architecture-on the element types and their patterns of interaction-and these constraints define a set or family of architectures that satisfy them. For example, client-server is a common architectural pattern. Client and server are two element types, and their coordination is described in terms of the protocol that the server uses to communicate with each of its clients. Use of the term client-server implies only that multiple clients exist; the clients themselves are not identified, and there is no discussion of what functionality, other than implementation of the protocols, has been assigned to any of the clients or to the server. Countless architectures are of the client-server pattern under this (informal) definition, but they are different from each other. An architectural pattern is not an architecture, then, but it still conveys a useful image of the system-it imposes useful constraints on the architecture and, in turn, on the system.
One of the most useful aspects of patterns is that they exhibit known quality attributes. This is why the architect chooses a particular pattern and not one at random. Some patterns represent known solutions to performance problems, others lend themselves well to high-security systems, still others have been used successfully in high-availability systems. Choosing an architectural pattern is often the architect’s first major design choice.
The term architectural style has also been widely used to describe the same concept.
A reference model is a division of functionality together with data flow between the pieces. A reference model is a standard decomposition of a known problem into parts that cooperatively solve the problem. Arising from experience, reference models are a characteristic of mature domains. Can you name the standard parts of a compiler or a database management system? Can you explain in broad terms how the parts work together to accomplish their collective purpose? If so, it is because you have been taught a reference model of these applications.
A reference architecture is a reference model mapped onto software elements (that cooperatively implement the functionality defined in the reference model) and the data flows between them. Whereas a reference model divides the functionality, a reference architecture is the mapping of that functionality onto a system decomposition. The mapping may be, but by no means necessarily is, one to one. A software element may implement part of a function or several functions.
Software metrics are treaded as part of an engineering discipline - metrics should be evaluated to determine whether they measure what they purpose to measure prior to use them. There are fours metrics methodologies that have been validation analyses performance on specific metrics or metric system.Read more
Software metrics are treaded as part of an engineering discipline – metrics should be evaluated to determine whether they measure what they purpose to measure prior to use them. There are fours metrics methodologies that have been validation analyses performance on specific metrics or metric system.
Among these validations are the following: Function points are derived using an empirical relationship based on countable (direct) measures of software information domain and assessments of soft ware complexity. The function interpreted to be probability that a defect is de tected by time y. R (y) is the probability that is no failure during the time interval of length of y, where R (y) = 1-F (y) [2]. Halstead uses the primitive measure to de velop expressions for the overall program length; potential minimum volume for an algorithm; the actual volume (number of bits required to specify); the program level (a measure of software complexity); language level (a constant for a given language); and other features such as development effort, development time, and even the projected number of faults in the software. Evaluation of metrics against syn tactic complexity is properties.
Software measurements have the following characteristics:
It has mathematically defined criteria, which can be applied to measure software quality.
The criteria are: consistency, association, discriminative power and Tracking .
It is developed from the point of view of the metric user who has requirements for as sessing, controlling, and predicting quality.
It defines a metrics validation process that integrates quality factor, metric, and functions .
For 8A H, in mode 0. The value in CWR are D7 = 1, D6 = 0, D5 = 0, D4 = 0, D3 = 1, D2 = 0, D1 = 1 and D0 = 0 For 8B H, in mode 0. The value in CWR are D7 = 1, D6 = 0, D5 = 0, D4 = 0, D3 = 1, D2 = 0, D1 = 1 and D0 = 1 For 92 H, in mode 0. The value in CWR are D7 = 1, D6 = 0, D5 = 0, D4 = 1, D3 = 0, D2Read more
For 8A H, in mode 0. The value in CWR are D7 = 1, D6 = 0, D5 = 0, D4 = 0, D3 = 1, D2 = 0, D1 = 1 and D0 = 0
For 8B H, in mode 0. The value in CWR are D7 = 1, D6 = 0, D5 = 0, D4 = 0, D3 = 1, D2 = 0, D1 = 1 and D0 = 1
For 92 H, in mode 0. The value in CWR are D7 = 1, D6 = 0, D5 = 0, D4 = 1, D3 = 0, D2 = 0, D1 = 1 and D0 = 0
For 98 H, in mode 0. The value in CWR are D7 = 1, D6 = 0, D5 = 0, D4 = 1, D3 = 1, D2 = 0, D1 = 0 and D0 = 0
For 80 H, in mode 0. The value in CWR are D7 = 1, D6 = 0, D5 = 0, D4 = 0, D3 = 0, D2 = 0, D1 = 0 and D0 = 0
Analyze the relationship between architectural model, reference model, and reference architecture. Bring out the numerous process recommendations used by an …
An architectural pattern is a description of element and relation types together with a set of constraints on how they may be used. A pattern can be thought of as a set of constraints on an architecture-on the element types and their patterns of interaction-and these constraints define a set or famiRead more
- An architectural pattern is a description of element and relation types together with a set of constraints on how they may be used. A pattern can be thought of as a set of constraints on an architecture-on the element types and their patterns of interaction-and these constraints define a set or family of architectures that satisfy them. For example, client-server is a common architectural pattern. Client and server are two element types, and their coordination is described in terms of the protocol that the server uses to communicate with each of its clients. Use of the term client-server implies only that multiple clients exist; the clients themselves are not identified, and there is no discussion of what functionality, other than implementation of the protocols, has been assigned to any of the clients or to the server. Countless architectures are of the client-server pattern under this (informal) definition, but they are different from each other. An architectural pattern is not an architecture, then, but it still conveys a useful image of the system-it imposes useful constraints on the architecture and, in turn, on the system.
- A reference model is a division of functionality together with data flow between the pieces. A reference model is a standard decomposition of a known problem into parts that cooperatively solve the problem. Arising from experience, reference models are a characteristic of mature domains. Can you name the standard parts of a compiler or a database management system? Can you explain in broad terms how the parts work together to accomplish their collective purpose? If so, it is because you have been taught a reference model of these applications.
- A reference architecture is a reference model mapped onto software elements (that cooperatively implement the functionality defined in the reference model) and the data flows between them. Whereas a reference model divides the functionality, a reference architecture is the mapping of that functionality onto a system decomposition. The mapping may be, but by no means necessarily is, one to one. A software element may implement part of a function or several functions.
See lessOne of the most useful aspects of patterns is that they exhibit known quality attributes. This is why the architect chooses a particular pattern and not one at random. Some patterns represent known solutions to performance problems, others lend themselves well to high-security systems, still others have been used successfully in high-availability systems. Choosing an architectural pattern is often the architect’s first major design choice.
The term architectural style has also been widely used to describe the same concept.
Explain statistical methods for software metric estimation and evaluation
Software metrics are treaded as part of an engineering discipline - metrics should be evaluated to determine whether they measure what they purpose to measure prior to use them. There are fours metrics methodologies that have been validation analyses performance on specific metrics or metric system.Read more
Software metrics are treaded as part of an engineering discipline – metrics should be evaluated to determine whether they measure what they purpose to measure prior to use them. There are fours metrics methodologies that have been validation analyses performance on specific metrics or metric system.
Among these validations are the following: Function points are derived using an empirical relationship based on countable (direct) measures of software information domain and assessments of soft ware complexity. The function interpreted to be probability that a defect is de tected by time y. R (y) is the probability that is no failure during the time interval of length of y, where R (y) = 1-F (y) [2]. Halstead uses the primitive measure to de velop expressions for the overall program length; potential minimum volume for an algorithm; the actual volume (number of bits required to specify); the program level (a measure of software complexity); language level (a constant for a given language); and other features such as development effort, development time, and even the projected number of faults in the software. Evaluation of metrics against syn tactic complexity is properties.
Software measurements have the following characteristics:
It has mathematically defined criteria, which can be applied to measure software quality.
The criteria are: consistency, association, discriminative power and Tracking .
It is developed from the point of view of the metric user who has requirements for as sessing, controlling, and predicting quality.
It defines a metrics validation process that integrates quality factor, metric, and functions .
See lessComment on the direction of the port for the following CWR values in 8255 80H 8A H 8B H 92H …
For 8A H, in mode 0. The value in CWR are D7 = 1, D6 = 0, D5 = 0, D4 = 0, D3 = 1, D2 = 0, D1 = 1 and D0 = 0 For 8B H, in mode 0. The value in CWR are D7 = 1, D6 = 0, D5 = 0, D4 = 0, D3 = 1, D2 = 0, D1 = 1 and D0 = 1 For 92 H, in mode 0. The value in CWR are D7 = 1, D6 = 0, D5 = 0, D4 = 1, D3 = 0, D2Read more
For 8A H, in mode 0. The value in CWR are D7 = 1, D6 = 0, D5 = 0, D4 = 0, D3 = 1, D2 = 0, D1 = 1 and D0 = 0
See lessFor 8B H, in mode 0. The value in CWR are D7 = 1, D6 = 0, D5 = 0, D4 = 0, D3 = 1, D2 = 0, D1 = 1 and D0 = 1
For 92 H, in mode 0. The value in CWR are D7 = 1, D6 = 0, D5 = 0, D4 = 1, D3 = 0, D2 = 0, D1 = 1 and D0 = 0
For 98 H, in mode 0. The value in CWR are D7 = 1, D6 = 0, D5 = 0, D4 = 1, D3 = 1, D2 = 0, D1 = 0 and D0 = 0
For 80 H, in mode 0. The value in CWR are D7 = 1, D6 = 0, D5 = 0, D4 = 0, D3 = 0, D2 = 0, D1 = 0 and D0 = 0
When the ports of 8255A are to be used in mode 0 with all the ports as input port?
D7 = 1 D6=0 D5=0 D4=1 D3=1 D2=0 D1=1 D0=1 WHICH RESULTS = 9B H
D7 = 1
D6=0
D5=0
D4=1
D3=1
D2=0
D1=1
D0=1
WHICH RESULTS = 9B H
See lessCreate a program to add two numbers 55H and 50H. The 1st number is present in memory C000H. The second …
LDA C000H MOV H,A LDA C001H ADD H MOV L,A MVI A,00H ADC A MOV H,A SHLD C003 HLT #ORG C000H #DB 55H,50H
Write Assembly language instructions to: 1) Loading value in accumulator from location 3000H 2) Moving the value to register C …
a.LDA 3000H b.MOV C,A c.LDA 3001H MOV B,A d. MOV D,BMOV B,CMOV C,D e.LDA 3002HMOV A,CSTA 3002HHLT
a.LDA 3000H
b.MOV C,A
c.LDA 3001H
MOV B,A
d. MOV D,B
MOV B,C
MOV C,D
e.LDA 3002H
MOV A,C
STA 3002H
HLT
See less