Found 213 Articles for Computer Programming

There are two different modes of addressing namely, Direct Addressing Mode and Implied Addressing Mode, to address operands in computer programs. Therefore, the fundamental difference between direct and implied addressing modes is in their method of specifying operands in computer programming. Before discussing the differences between direct and implied addressing modes, let us first know a bit about them individually. What is Direct Addressing Mode? In computer programming, the addressing mode in which the actual memory address of the data is given to specify the operand is termed as direct addressing mode. Therefore, in the case of direct addressing mode, ... Read More

A combinational circuit is one that contains logic gates. Encoders and decoders are such combinational circuits in which one changes the input data into binary code and the other one decodes it to its original input signal. Both encoders and decoders are multiple input and multiple output devices Encoding allows the input signal to function on various systems. For instance, when we search something in the web browser, it is converted into a binary code (encoding) which can be understood by it then search for it and send the results back to the user by converting the binary form into ... Read More

In this article, you will understand the difference between fuzzy logic and probability. Fuzzy logic It is a many-valued logic where the truth value of variables may be a real number between 0 and 1, including 0 and 1. Everything is associated with a degree. It is based on natural language processing. It can be integrated with programming. It is best suited for approximation. It is generally used by quantitative analysts. It helps understand the concept of vagueness. It captures the meaning of partial truth. The degree of membership is in a set. It is used in air conditioners, ... Read More

There are two distinct varieties of digital computer architectures, each of which provides a description of the functioning and execution of computer systemsThe first is known as the Von Neumann Architecture, which was designed by the well-known physicist and mathematician John Von Neumann in the late 1940s.The second is known as the Harvard Architecture, which was based on the original Harvard Mark relay-based computer and used separate memory systems to store data and instructions. Both of these computer architectures were developed in the 1950s.In the original Harvard architecture, data and instructions were both stored in electro-mechanical counters, while the instructions ... Read More

SolutionConvert the pattern into NFA’sMake a Combined NFAConvert NFA to DFAA = ε − closure (0) = {0, 1, 3, 7}The transition on symbols a, b from state AFor State Aε − closure (Ta)                              ε − closure (Tb)= ε − closure ({2, 4, 7})                  = ε − closure ({8})= {2, 4, 7} = B                                = {8} = CFor State Bε − closure (7) ... Read More

It is a kind of notation in which each production of Context-Free Grammar is related with a set of semantic rules or actions, and each grammar symbol is related to a set of Attributes. Thus, the grammar and the group of semantic Actions combine to make syntax-directed definitions.The translation may be the generation of intermediate code, object code, or adding the information in symbol table about constructs type. The modern compiler uses the syntax-directed translation that makes the user’s life easy by hiding many implementation details and free the user from having to specify explicitly the order in which semantic ... Read More

A block is a statement containing its own local data declaration. The concept of a block is originated with ALGOL. The block-structured language permits an array with adjustable length. The main feature of blocks is their bracketing structure (begin and end used in ALGOL) in which they can define their data.Activation Record for Block Structured LanguagesBlock structured language like ALGOL, and PL/I permit adjustable arrays, i.e., of varying length. Therefore, we cannot store irregular size arrays in between activation records. It can allocate the flexible or variable arrays at one corner of the activation record or above the fixed-size data. ... Read More

A block is a statement containing its own local data declaration. The concept of a block is originated with ALGOL. The block-structured language permits an array with adjustable length. The main feature of blocks is their bracketing structure (begin and end used in ALGOL) in which they can define their data. In 'C' language, the syntax of the block is −{    declaration statements; }where the braces limit the block. The characteristic of a block is its nesting structure. Delimiters mark the starting and end of the block. In 'C' language, the braces { } act as delimiters, while ALGOL ... Read More

In stack allocation, it can analyze how the memory is allocated at runtime when a procedure is called & when the value from the procedure is returned.Passing Parameter to Procedure (param x)− When actual parameter x is passed to the procedure, it will be pushed into the stack, i.e., push (x).∴ param(x) refers to push (x) which refers to decrementing of the top pointer from N + 1 to N and x will be pushed onto the stack.∴ The following statements will be executed.top = top – 1*top = x or 0[top] = xHere 0[top] means 0 offsets from the ... Read More

Stack Allocation scheme is the simplest Run-Time Storage Management Technique. The storage is allocated sequentially in the stack beginning at one end. Storage should be freed in the reverse order of allocation so that a block of storage being released is always at the top of the stack.A program consists of data and procedures. On execution of each procedure, some amount of memory is occupied, which has information regarding the procedure, i.e., its actual parameters, number of arguments, return address, return values & local data, etc. That part of memory is the Activation Record of that procedure.Activation RecordAn Activation Record ... Read More