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1 distinguish between weighted and unweighted codes give two examples each of both types of code2 what is an excess-3
1 what is meant by the radix or base of a number system briefly describe why hex representation is used for the
1 what is the totem-pole output stage what are its advantages2 what are the basic differences between buffered and
1 what do you understand by the term logic family what is the significance of the logic family with reference to
what is the main significance of ieeeansi symbols when compared with the conventional ones draw the ansi symbols for
define the fan-out specification of a logic gate which parameters would you need to know from the data sheet of a logic
draw the circuit symbol and the associated truth table for the followinga a tristate noninverting buffer with an active
1 give brief statements that would help one remember the truth table of and nand or nor ex-or and ex-nor logic gate
1 how do you distinguish between positive and negative logic systems prove that an or gate in a positive logic system
refer to the logic diagram in fig 566 determine the current being sourced by the nand gate when its output is high and
the data sheet of a quad two-input and gate type 74s08 specifies the propagation delay and power supply parameters as
1 what special precautions should we observe in handling and using cmos ics2 with the help of suitable schematics
1 what is the main criterion for the suitability of a logic family for use in fabricating lsi and vlsi logic functions
1 what is bi-cmos logic what are its advantages2 why is ecl called nonsaturating logic what is the main advantage
with the help of a block schematic of the logic circuit briefly describe how individual four-bit magnitude comparators
1 define the following terms-1electricity2electrical safety3voltage4current5impedance
a b bin d and bout are respectively the minuend the subtrahend the borrow-in the difference output and the borrow-out
determine the number of 7483s four-bit binary adders and 7486s quad two-input ex-or gates required to design a 16-bit
briefly describe how we can use a decoder optimally to implement a given boolean function illustrate your answer with
what is an encoder how does a priority encoder differ from a conventional encoder with the help of a truth table
1 what is a multiplexer circuit briefly describe one or two applications of a multiplexer2 what is a demultiplexer and
the objective is to design a bcd adder circuit using four-bit binary adders and additional combinational logic if the
determine the number of half and full adder circuit blocks required to construct a 64-bit binary parallel adder also
briefly describe the concept of look-ahead carry generation with respect to its use in adder circuits what is its
draw the truth table of a full subtractor circuit write a minterm boolean expression for difference and borrow outputs