Binary Subtraction Question & Answers December 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 Hint 2). Which of the following is the low logic? 0 1 X Both a and b Hint 3). Which of the following is the high logic? 0 1 X Both a and b Hint 4). Which of the following is the base value of binary subtraction? 2 8 12 10 Hint 5). A base 10 in binary number system is called__________? Decimal Octal Hexa Asic Hint Read more about Decimal Systems. 6). How many parts do a binary subtraction consist of? 2 3 4 5 Hint 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 Hint 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 Hint 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 Hint 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 Hint 11). Which of the following is the binary subtraction output of 0011010-001100? 0001110 0101000 1110000 0000011 Hint 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 Hint 13). Which of the following is the positive sign in binary subtraction? 1 0 X All the above Hint 14). Which of the following is the negative sign in binary subtraction? 1 0 X All the above Hint 15). A binary value 0 represents _____ logic? High Low Neutral None of the above Hint 16). A binary value 1 represents _____ logic? High Low Neutral None of the above Hint 17). Identify the sign bit representation from the 4 bit subtraction input “-1010”? 11010 01010 00101 10100 Hint 18). Identify the sign bit representation from the 4 bit subtraction input “1010”? 11010 01010 00101 10100 Hint 19). Identify the MSB bit of the 4 digit number “0011”? 0 01 11 10 Hint 20). Identify the LSB bit of the 4 digit number “0011”? 0 01 11 1 Hint 21). In how many ways a “-ve” signed binary digits in binary subtraction can be represented? 2 3 1 4 Hint 22). A complementary representation is binary number systems can be implemented in ____ methods? Binary Addition Binary Subtraction Binary Multiplication All the above Hint 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 Hint 24). Identify the value of binary subtraction (1101101-11011)? 1010010 1010010 101010 010101 Hint 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 Hint Binary Subtractor Interview Questions and Answers 26). Which of the following is the complement of 0? 1 01 10 11 Hint 27). Which of the following is the complement of 1? 1 0 10 11 Hint 28). Which of the following is the 2’s complement of the value “ 0011011? 1100100 0000010 1100101 1111000 Hint 29). Binary subtractor is represented using _____ ways? 2 3 4 5 Hint 30). Which of the following component can perform binary subtractions? Micro controller Micro processor Drivers Both a and b Hint 31). On how many minimum digits binary subtraction is performed? 1 2 3 4 Hint 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 Hint 33). On which of the following bit binary subtraction is performed? MSB LSB Lower bit Both b and c Hint 34). 1’s complement on binary s subtraction is performed using ____ ways? 1 2 3 4 Hint 35). Binary subtractors are of ____ types? 1 2 3 4 Hint 36). A binary subtractors is a ____ type of device? Combinational Sequential Logical Both a and b Hint 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 Hint 38). A subtractor uses ____ number of gates? 2 3 4 5 Hint 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 Hint 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 Hint 41). At which of the following gate a difference bit is obtained in a binary half subtractor? AND OR NOT XOR Hint 42). At which of the following gate a Borrow bit is obtained in a binary half subtractor? AND OR NOT XOR Hint 43). Which of the following is the output of AND gate with input 0,0? 0 1 X All the above Hint 44). Which of the following is the output of AND gate with input 0,1?a 0 1 X All the above Hint 45). Which of the following is the output of AND gate with input 1,0? 0 1 X All the above Hint 46). Which of the following is the output of AND gate with input 1,1? 0 1 X All the above Hint 47). Which of the following is the output of NOT gate with input is “0”? 0 1 X All the above Hint 48). Which of the following is the output of NOT gate with input is “1”? 0 1 X All the above Hint 49). Which of the following is the output of XOR gate with input is “00”? 0 1 X All the above Hint 50). Which of the following is the output of XOR gate with input is “01”? 0 1 X All the above Hint Binary Subtractor Important Questions for Interviews 51). Which of the following is the output of XOR gate with input is “10”? 0 1 X All the above Hint 52). Which of the following is the output of XOR gate with input is “11”? 0 1 X All the above Hint 53). Identify the logic gate from the following figure? Logic Gate NOT OR XOR AND Hint 54). Identify the logic gate from the following figure? Logic Gate NOT OR XOR AND Hint 55). Identify the logic gate from the following figure? Logic Gate NOT OR XOR AND Hint 56). Identify the logic gate from the following figure? Logic Gate NOT OR XOR AND Hint 57). How many half subtractors are required in a full subtractor? E Hint 58). How many inputs do a full subtractor consist of? 1 2 3 4 Hint 59). How many outputs a full subtractor consist of? 1 2 3 4 Hint 60). Which of the following is the Difference output of full subtractor with input “00” and Bin “0”? 0 1 X 01 Hint 61). Which of the following is the Difference output of full subtractor with input “01” and Bin “0”? 0 1 X 01 Hint 62). Which of the following is the Difference output of full subtractor with input 10 and Bin 0? 0 1 X 01 Hint 63). Which of the following is the Difference output of full subtractor with input “11” and Bin “0”? 0 1 X 01 Hint 64). Which of the following is the Difference output of full subtractor with input “1,1” and Bin “1”? 0 1 X 01 Hint 65). Which of the following is the Difference output of full subtractor with input “1,0” and Bin “1”? 0 1 X 01 Hint 66). Which of the following is the Difference output of full subtractor with input “0,1” and Bin “1”? 0 1 X 01 Hint 67). Which of the following is the Difference output of full subtractor with input “0,0” and Bin “1”? 0 1 X 01 Hint 68). Which of the following is the Borrow output of full subtractor with input “0,0” and Bin “1”? 0 1 X 01 Hint 69). Which of the following is the Borrow output of full subtractor with input “0,1” and Bin “1”? 0 1 X 01 Hint 70). Which of the following is the Borrow output of full subtractor with input “1,0” and Bin “1”? 0 1 X 01 Hint 71). Which of the following is the Borrow output of full subtractor with input “1,1” and Bin “1”? 0 1 X 01 Hint 72). Which of the following is the Borrow output of full subtractor with input “0,0” and Bin “0”? 0 1 X 01 Hint 73). Which of the following is the Borrow output of full subtractor with input “0,1” and Bin “0”? 0 1 X 01 Hint 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 Hint 75). Which of the following is the Borrow output of full subtractor with input “1,1” and Bin “0”? 0 1 X 01 Hint Binary Subtractor Quiz Questions and Answers. 76). How many types of logic gates are required while designing Full subtractor? 2 3 4 5 Hint 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 ) Hint 78). Which of the following is the output of 3 bit binary subtractor borrow equation? X bar. Y X.Y bar XY X + Y Hint 79). How many bits binary based full subtractor is required for n bit binary subtractor? 1 2 3 n Hint 80). Which of the following are the IC’s that performs binary subtraction? 74LS283 CD4008 741D Both a and b Hint 81). Which of the following is the Bout value of half subtractor when X>Y? 1 0 X All the above Hint 82). Which of the following is the Bout value of half subtractor when X<Y? 1 0 X All the above Hint 83). Logical gates are designed using __________? Diodes Transistors Switches All the above Hint Read more about Diodes. 84). Which of the following are the examples of logic circuits? Mux Adders Subtractors All the above Hint Read more about MUX. 85). A k-map contains ____ number of components? 1 2 3 4 Hint 86). Which of the following is the full form of K-map? Karnaugh Map King Map Karun Map All the above Hint 88). A K-map is of _____ dimensions? 1 2 3 4 Hint 89). A Binary subtrator uses K-map to represent _____ coordinates as 2D representation? Input Output Carry All the above Hint 90). Which of the following types of variables do a k-map minimizes? 2 3 4 All the above Hint 91). Which of the following scientist developed K-map? Mauruce Karnaugh James Charles Denis Hint 92). Which of the following is cell value for n-variables in K-map? 2 ^ n 2n 2/n 1/2n Hint 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 Hint 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 Hint 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 Hint 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 Hint 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 Hint 98). How many types of K-maps are available? 1 2 3 5 Hint 99). Which of the following is the cell value of 2 Variable K-map? 2 3 4 6 Hint 100). Which of the following is the cell value of 3 Variable K-map? 2 8 4 6 Hint Time's up