Digital System Design Crossword Puzzle

QUESTIONS LIST:

• nand : by using only _ gates, we can realise all logic functions.
• combinational : a multiplexer is a _ circuit.
• gray : the code where all successive numbers differ from their preceding number by single bit .
• xor : a bulb in the staircase has two switches, one switch being on the ground floor and the other one on the first floor. the bulb can be turned on and also can be turned off by any one of the switches, irrespective of the state of the other switch. the logic of switching on the bulb resembles _ .
• and : which gate is used to implement a bcd to seven segment decoder.
• four : how many 3*8 decoders are required to construct a 5*32 decoder.
• six : the output y of a 2-bit comparator is logic 1 whenever the 2-bit input a is greater than the 2-bit input b. the number of combinations for which the output is logic 1, is _ .
• multiplexer : it can be used to route an input signal to one of several possible outputs.
• fifteen : construct a 16*1 mux using 2*1 mux. how many 2*1 mux will be required.
• three : how many or gates are required for an octal-to-binary encoder?
• logic gates : the main building blocks of combinational circuits are _ .
• decoder : it can be used to interface a bcd input to an led display. only one of its outputs can be active at one time.
• prom : it has fixed and gates and programmable or gates.
• encoder : it has more inputs than outputs. it is used to convert key actuations to a binary code.
• seven : how many types of logic families exists?