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logic gates characteristics
Engineering and Construction
Pages 5 (1255 words)
PRACTICAL 5: LOGIC DECODING CIRCUITS AND MULTIPLEXERS Name of Student: Course: Instructor: Date of Submission: Introduction Logic gates are the basic building blocks of digital electronics. They act as switches to allow or block the flow of digital data. The digital information is implemented using Boolean algebra in which variables have only two states i.e…
Also, an XOR (Exclusive- OR) which is sometimes called an inequality comparator implements the expression such that “if A is different than B then X is true. Sometimes a buffer may be used between the inputs and output of a logic circuit. The buffer helps to increase the fan-in of the circuit. The XOR gate is commonly used as a buffer to supply a 0 or a1to one of its inputs. Multiplexers behave like rotary switches and select any one of its inputs as output. It is a combination of logic gates thereby having several inputs with only one output. The input channel to be read into the output is controlled by supplying a definite digital word to the select inputs. In experiments using microelectronic chips such as the Multiplexer ICs, care should be taken when handling so as not to expose the chips to static hazards. The input lines to a multiplexer chip are 2, 4, 8 or 16 that supply the output one at a time. They are used to reduce the number of logic gates required to implement the circuit. Digital multiplexers are constructed from analogue switches encased in a single IC package. The multiplexer is used in signal routing, data communications and data bus control. They can be used together with a demultiplexer to transmit parallel data in serial form through a single data link e.g. fibre optic cable. ...
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