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Explain difference between Scanning and parsing.
Scanning and parsing: Scanning process is the process of recognizing the lexical components in a source string whereas parsing is the process of checking the validity of a source string, and to find out its syntactic structure. The purpose for separating scanning from parsing is that the lexical characteristics of a language can be specified by using Type-3 grammars. All Type-3 production identifies lexical components is also a Type-2 production. Conversely, a recognizer for Type-3 productions is easier, simple to build and more efficient throughout execution than a recognizer for Type-2 productions. Therefore it is better to handle the lexical and syntactic elements of a source language separately.
What are the properties of E-cash? Properties: a. Monetary Value: It must be backed through either cash, bank –certified cashier’s cheque and authorized credit cards.
Explain the Feasibility Study This includes writing a report to convince management of the merits of adopting proposed new system. Some features of the study comprise: T
Use of instruction register and program counter: Q. What is the use of instruction register (IR) and program counter (PC)? Ans: The instruction register (IR) holds the inst
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Illustrate the basic structure of the von Neumann machine The following figure shows basic structure of the von Neumann machine. A von Neumann machine has only a single path be
Q. Explain about Interrupt Procedure? The interrupt procedure uses request header to conclude the function requested by DOS. It also performs all functions for device driver. T
flow chart
Using D-Flip flops and waveforms explain the working of a 4-bit SISO shift register. Ans. Serial In-Serail Out Shift Register: Fig.(a) demonstrates a 4 bit serial in-serial out
Q. Evaluation Stack Architecture? A stack is a data structure which implements Last-In-First-Out (LIFO) access policy. You can add an entry to the with a PUSH(value) as well as
In a JK Flip-Flop, toggle means ? Ans. Change the output to the opposite state implies the meas of toggle, in a JK Flip-Flop.
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