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In structure chart whole application is divided into modules (set of program instructions) and modules are designed according to some principles of design. These are:
Modularity and partitioning: Every system must comprises a hierarchy of modules. Lower level modules are usually smaller in size and scope compared to higher level modules. They serve to partition processes in separate functions.
Coupling: Modules must be loosely coupled. Which means that modules must have little dependence on other modules in a system.
Cohesion: Modules must be highly cohesive. It means that modules must carry out a single processing function.
Span of control: Modules must interact with and manage functions of a limited number of lower level modules. It means that number of called modules must be limited (in a calling module).
Size of Module: Number of instructions present in a module must be limited so that module size is normally small.
Shared use of Functions: Functions must not be duplicated in separate modules may be shared. It means that functions can be written in a single module and can be invoked by any other module when required.
Explain the term middleware in context of RPC. A variety of commercial tools have been urbanized to assist the programmer in constructing client- server software. These tools a
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Why some languages are not decidable or even Turing - recognizable? The reason that there are uncountable many languages yet only countably many Turing machines.
Why a task can n ot return a value? If tasks can return values then Let's take a look at the below example. A=f1(B)+f2(C); and f1 and f2 had delays of say 5 and 10? Whe
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Intranet : An Intranet is a type of information system that facilitates communication within the organizations between widely dispersed departments, divisions, and regional loc
What are the major functions of IO system? i. Interface to the CPU and memory by the system bus. ii. Interface to one or more IO devices by tailored data link.
Allocation of Bits among Opcode and Operand The trade-off here is between numbers of bits of opcode vs. the addressing capabilities. An interesting development in this regard i
Q. Illustrate Simple ALU Organisation? An ALU comprises circuits which perform data processing micro-operations. Though how are these ALU circuits used in conjunction of other
What are the Input devices Various devices are available for data input on graphics workstations. Most systems have a keyboard and one or more additional devices specially desi
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