Binary Subtraction Question & AnswersDecember 20, 2021 By WatElectronics This article lists 100 Binary Subtraction MCQs for engineering students. All the Binary Subtraction Questions and Answers given below include a hint and a link wherever possible to the relevant topic. This is helpful for users who are preparing for their exams, interviews, or professionals who would like to brush up their fundamentals on Binary Subtraction.Binary subtraction is a fundamental task performed using a microprocessor or a controller by following a set of rules similar to traditional subtraction. Based on values obtained from binary subtraction, mapping these values using K- map to obtain normalized equations its logic gates design is represented. Binary subtraction is represented by the symbol “-“ to perform binary subtraction on a combination of 0’s and 1’s. A component that performs binary subtraction is called a binary subtractor. They are classified into 2 types namely Binary Half Subtractor and Binary Full Subtractor.A binary half subtractor consists of 2 inputs (X, Y) and 2 output (Difference (out), Borrow (out)), whereas a binary full subtractor consists of 3 inputs (X, Y, Bin) and 2 output (Difference (out), Borrow (out)). They benefit in terms of design factors, low power consumption, and high speed. These components are mainly deployed in electronic devices where timer operation is required such as computers for counter purposes.1). How many bits are used in binary subtraction? 2 1 3 2 HintEven number of bits.2). Which of the following is the low logic? 0 1 X Both a and b HintLogic low.3). Which of the following is the high logic? 0 1 X Both a and b HintLogic high.4). Which of the following is the base value of binary subtraction? 2 8 12 10 HintDecimal value.5). A base 10 in binary number system is called__________? Decimal Octal Hexa Asic HintOther way of expressing number system in fractional values. Read more about Decimal Systems.6). How many parts do a binary subtraction consist of? 2 3 4 5 HintOdd number.7). Which of the following is the first step of binary subtraction? Select 1’s column Perform binary subtraction Obtain borrow and subtraction result Obtain the result HintChoose values.8). Which of the following is the second step of binary subtraction? Select 1’s column Perform binary subtraction Obtain borrow and subtraction result Obtain the result HintPerform mathematical operation.9). Which of the following is the third step of binary subtraction? Select 1’s column Perform binary subtraction Obtain borrow and subtraction result Obtain the result HintPerform further operation after subtraction.10). Which of the following is the third step of binary subtraction? Select 1’s column Perform binary subtraction Obtain borrow and subtraction result Obtain the result HintFinal step.11). Which of the following is the binary subtraction output of 0011010-001100? 0001110 0101000 1110000 0000011 HintBinary value of 26-12=14.12). Which of the following is the representation of binary subtraction of 34 -20? 34 base 1o – 20 base 10 34 base 8 – 20 base 10 34 base 2 – 20 base 10 34 base 2 – 2 base 2 HintRepresented as base values of 10.13). Which of the following is the positive sign in binary subtraction? 1 0 X All the above HintLogic low.14). Which of the following is the negative sign in binary subtraction? 1 0 X All the above HintLogic high,15). A binary value 0 represents _____ logic? High Low Neutral None of the above HintMinimum value.16). A binary value 1 represents _____ logic? High Low Neutral None of the above HintLogic 1.17). Identify the sign bit representation from the 4 bit subtraction input “-1010”? 11010 01010 00101 10100 HintA sign bit representation from the 4 bit subtraction input “-1010”?18). Identify the sign bit representation from the 4 bit subtraction input “1010”? 11010 01010 00101 10100 Hint+ sign representation in binary format is?19). Identify the MSB bit of the 4 digit number “0011”? 0 01 11 10 HintLogic low.20). Identify the LSB bit of the 4 digit number “0011”? 0 01 11 1 HintLogic high.21). In how many ways a “-ve” signed binary digits in binary subtraction can be represented? 2 3 1 4 HintEven number of ways.22). A complementary representation is binary number systems can be implemented in ____ methods? Binary Addition Binary Subtraction Binary Multiplication All the above HintDigital ALU operations.23). Which of the following is the primary rule to be followed while performing Binary subtraction? Subtracting digit should start with greater digit Subtracting digit should with lesser digit Subtracting digit should start with digit 1 Both a and c HintLogic high.24). Identify the value of binary subtraction (1101101-11011)? 1010010 1010010 101010 010101 Hint1101101-11011=?25). Which of the following step need to be considered in absence of equal number of digits between minuend and subtrahend? Add extra zeros according to maximum subtrahend Add extra 1’s according to maximum subtrahend Add extra 1’s according to maximum minuend Add extra 0’s according to minimum minuend HintAdd binary digits to the data for making them equal.Binary Subtractor Interview Questions and Answers26). Which of the following is the complement of 0? 1 01 10 11 HintLogic high.27). Which of the following is the complement of 1? 1 0 10 11 HintLogic low.28). Which of the following is the 2’s complement of the value “ 0011011? 1100100 0000010 1100101 1111000 Hint1101101 +1100101 =?29). Binary subtractor is represented using _____ ways? 2 3 4 5 HintOdd number of ways.30). Which of the following component of binary subtractor performs subtractions? Micro controller Micro processor Drivers Both a and b HintComponents that is heart of computer.31). On how many minimum digits binary subtraction is performed? 1 2 3 4 HintEven number.32). Which of the following is the conversion method used while performing binary subtraction? Binary to Digital Equivalent Binary to Decimal Equivalent Decimal to octal All the above Hint0's and 1's representation.33). On which of the following bit binary subtraction is performed? MSB LSB Lower bit Both b and c HintLeast significant bit.34). 1’s complement on binary s subtraction is performed using ____ ways? 1 2 3 4 HintEven number of ways.35). Binary subtractors are of ____ types? 1 2 3 4 HintEven number of types.36). A binary subtractors is a ____ type of device? Combinational Sequential Logical Both a and b HintDigital logic types. Read more about Combinational Circuits.37). Which of the following is the representation of binary subtraction “A,B”? A-B A+(-B) A-(-B) Both a and b HintThe representation of binary subtraction “A,B” is similar to arithmetic subtraction.38). A subtractor uses ____ number of gates? 2 3 4 5 HintOdd number of gates.39). Which of the following is the output of half subtractor difference (A,B)? A XOR B A AND B A OR B A NOT B HintA logic gate which is a combination of AND and OR gate.40). Which of the following is the output of half subtractor borrow (A,B)? A XOR B A AND B A OR B (A NOT) B HintA inverter gate.41). At which of the following gate a difference bit is obtained in a binary half subtractor? AND OR NOT XOR HintA logic gate which is a combination of AND and OR gate.42). At which of the following gate a Borrow bit is obtained in a binary half subtractor? AND OR NOT XOR HintA logic gate that provides logic 1 when both the inputs are 1.43). Which of the following is the output of AND gate with input 0,0? 0 1 X All the above HintLogic low.44). Which of the following is the output of AND gate with input 0,1?a 0 1 X All the above HintLogic low.45). Which of the following is the output of AND gate with input 1,0? 0 1 X All the above HintLogic low.46). Which of the following is the output of AND gate with input 1,1? 0 1 X All the above HintLogic high.47). Which of the following is the output of NOT gate with input is “0”? 0 1 X All the above HintLogic high.48). Which of the following is the output of NOT gate with input is “1”? 0 1 X All the above HintLogic low.49). Which of the following is the output of XOR gate with input is “00”? 0 1 X All the above HintLogic low.50). Which of the following is the output of XOR gate with input is “01”? 0 1 X All the above HintLogic high.Binary Subtractor Important Questions for Interviews51). Which of the following is the output of XOR gate with input is “10”? 0 1 X All the above HintLogic high.52). Which of the following is the output of XOR gate with input is “11”? 0 1 X All the above HintLogic low.53). Identify the logic gate from the following figure?Logic Gate NOT OR XOR AND HintAn inverter gate also called?54). Identify the logic gate from the following figure?Logic Gate NOT OR XOR AND HintLogic gate that provides 1 when both the inputs are high.55). Identify the logic gate from the following figure?Logic Gate NOT OR XOR AND HintA logic gate which is a combination of AND and OR gate.56). Identify the logic gate from the following figure?Logic Gate NOT OR XOR AND HintThe output of logic gate is 1 when both the inputs logic is 1.57). How many half subtractors are required in a full subtractor? E HintEven number of adders are required for a single full subtractor.58). How many inputs do a full subtractor consist of? 1 2 3 4 HintOdd number of inputs.59). How many outputs a full subtractor consist of? 1 2 3 4 HintDual number of output pins.60). Which of the following is the Difference output of full subtractor with input “00” and Bin “0”? 0 1 X 01 HintLogic low.61). Which of the following is the Difference output of full subtractor with input “01” and Bin “0”? 0 1 X 01 HintLogic high.62). Which of the following is the Difference output of full subtractor with input 10 and Bin 0? 0 1 X 01 HintLogic high.63). Which of the following is the Difference output of full subtractor with input “11” and Bin “0”? 0 1 X 01 HintLogic low.64). Which of the following is the Difference output of full subtractor with input “1,1” and Bin “1”? 0 1 X 01 HintLogic high.65). Which of the following is the Difference output of full subtractor with input “1,0” and Bin “1”? 0 1 X 01 HintLogic low.66). Which of the following is the Difference output of full subtractor with input “0,1” and Bin “1”? 0 1 X 01 HintLogic low.67). Which of the following is the Difference output of full subtractor with input “0,0” and Bin “1”? 0 1 X 01 HintLogic high.68). Which of the following is the Borrow output of full subtractor with input “0,0” and Bin “1”? 0 1 X 01 HintLogic high.69). Which of the following is the Borrow output of full subtractor with input “0,1” and Bin “1”? 0 1 X 01 HintLogic low.70). Which of the following is the Borrow output of full subtractor with input “1,0” and Bin “1”? 0 1 X 01 HintLogic high.71). Which of the following is the Borrow output of full subtractor with input “1,1” and Bin “1”? 0 1 X 01 HintLogic high.72). Which of the following is the Borrow output of full subtractor with input “0,0” and Bin “0”? 0 1 X 01 HintLogic low.73). Which of the following is the Borrow output of full subtractor with input “0,1” and Bin “0”? 0 1 X 01 HintLogic low. Read more about Full Subtractor.74). Which of the following is the Borrow output of full subtractor with input “1,0” and Bin “0”? 0 1 X 01 HintLogic high.75). Which of the following is the Borrow output of full subtractor with input “1,1” and Bin “0”? 0 1 X 01 HintLogic low.Binary Subtractor Quiz Questions and Answers.76). How many types of logic gates are required while designing Full subtractor? 2 3 4 5 HintOdd number.77). Which of the following is the output of 3 bit binary subtractor difference equation? D=(X xor Y ) xor Bin D= ( X and Y ) and Bin D= ( X and Y ) D= ( X and Bin ) HintSingle logical operation.78). Which of the following is the output of 3 bit binary subtractor borrow equation? X bar. Y X.Y bar XY X + Y HintProduct of terms.79). How many bits binary based full subtractor is required for n bit binary subtractor? 1 2 3 n HintMinimum value.80). Which of the following are the IC’s that performs binary subtraction? 74LS283 CD4008 741D Both a and b HintLS and CD based IC type.81). Which of the following is the Bout value of half subtractor when X>Y? 1 0 X All the above HintLogic low.82). Which of the following is the Bout value of half subtractor when X<Y? 1 0 X All the above HintLogic high.83). Logical gates are designed using __________? Diodes Transistors Switches All the above HintElectronic components. Read more about Diodes.84). Which of the following are the examples of logic circuits? Mux Adders Subtractors All the above HintSequential circuits. Read more about MUX.85). A k-map contains ____ number of components? 1 2 3 4 HintEven values.86). Which of the following is the full form of K-map? Karnaugh Map King Map Karun Map All the above HintThe full form of K-map is Karnaugh Map.88). A K-map is of _____ dimensions? 1 2 3 4 HintEven number of components.89). A Binary subtrator uses K-map to represent _____ coordinates as 2D representation? Input Output Carry All the above HintA Binary subtrator uses K-map to represent 3 terms.90). Which of the following types of variables do a k-map minimizes? 2 3 4 All the above HintA k-map minimizes variables such as 2,3,4,5.91). Which of the following scientist developed K-map? Mauruce Karnaugh James Charles Denis HintAn American physicist and mathematician scientist developed K-map.92). Which of the following is cell value for n-variables in K-map? 2 ^ n 2n 2/n 1/2n HintValue expressed in terms of power.93). Which of the following is the 1st step of K-map? 2,4,8 group in K-map should hold 1 Find Min and Max terms Group vertically or horizontally similar terms Both a and b HintView groups. Read more about K-map.94). Which of the following is the 2 nd step of K-map? 2,4,8 group in K-map should hold 1 Find Min and Max terms Group vertically or horizontally similar terms Both a and b HintFind terms.95). Which of the following is the 3 rd step of K-map? 2,4,8 group in K-map should hold 1 Find Min and Max terms Group vertically or horizontally similar terms Both a and b HintGrouping.96). Which of the following is the 4 th step of K-map? 2,4,8 group in K-map should hold 1 Find Min and Max terms Group vertically or horizontally similar terms Form equation HintRepresent in equation.97). Which of the following is the 5 th step of K-map? 2,4,8 group in K-map should hold 1 Simplify the equation Group vertically or horizontally similar terms Form equation HintSolve the equation to represent in minimum number of parameters.98). How many types of K-maps are available? 1 2 3 5 HintOdd values.99). Which of the following is the cell value of 2 Variable K-map? 2 3 4 6 Hint2^2=?100). Which of the following is the cell value of 3 Variable K-map? 2 8 4 6 Hint2^3=? Time is Up! Time's up