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Q. Explain Frequency-division multiplexing?
Frequency-division multiplexing (FDM) is a technique for data transmission widely used in telephone, radio, and cable TV systems in which the transmission frequency spectrum (i.e., bandwidth) is divided into smaller bands known as subchannels.
Data transmission between two stations can be achieved in either simplex, half-duplex, or full-duplex mode. In a simplexmode,mainly used in radio and TV broadcasts, information travels only in one direction. Thismode is rarely used in data communications. In half-duplexmode, used by radio communications, information may travel in both directions, but only in one direction at a time. The transmitter becomes the receiver and vice versa. In a full-duplex mode, information may travel in both directions simultaneously. This mode, used in telephone systems, adopts two different carrier frequencies.
Q. Explain working of Counters? A counter is a register that goes through a predetermined sequence of states when clock pulse is applied. In principle value of counters is incr
Explain the Race Around Condition? Consider the inputs of the JK flipflop j=1 and k=1 and Q=0 when a clock pulse of width tp is applied the output will change from 0 to 1 after
Q. Copy file from a floppy disk to the hard disk? While using a PC, often you need to copy file from a floppy disk to the hard disk or vice-versa. For instance, you buy some s
(i) Input a single ASCII character into BL register without echo on screen CODE SEGMENT MOV AH, 08H; Function 08H INT 21H ; the character inpu
Explain difference of Circuit switching versus Packet switching. Within circuit switching an end-to-end path is to be establishing before any data can be sent. Previously a con
Develop a RPN rational number expression evaluator (REEval). The learning objectives are: improved procedural programming skills improved confidence in designing and
PVM is mainly a simulation of a computer machine running parallel programs. It is a software package that allows a heterogeneous collection of UNIX and/or Windows computers hooked
The do while Loop This is very similar to the while loop except that the test occurs at the end of the loop body. This guarantees that the loop is executed at least once before
Q. What is Flash Memory? This memory is other form of semiconductor memory that was first introduced in mid-1980. These memories can be reprogrammed at high speed and therefo
Q. High Level Language Program Characteristics? So it is clear that new architectures must support high-level language programming. A high-level language system can be implemen
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