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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?

Hint
2). Which of the following is the low logic?

Hint
3). Which of the following is the high logic?

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4). Which of the following is the base value of binary subtraction?

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5). A base 10 in binary number system is called__________?

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Read more about Decimal Systems.
6). How many parts do a binary subtraction consist of?

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7). Which of the following is the first step of binary subtraction?

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8). Which of the following is the second step of binary subtraction?

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9). Which of the following is the third step of binary subtraction?

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10). Which of the following is the third step of binary subtraction?

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11). Which of the following is the binary subtraction output of 0011010-001100?

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12). Which of the following is the representation of binary subtraction of 34 -20?

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13). Which of the following is the positive sign in binary subtraction?

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14). Which of the following is the negative sign in binary subtraction?

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15). A binary value 0 represents _____ logic?

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16). A binary value 1 represents _____ logic?

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17). Identify the sign bit representation from the 4 bit subtraction input “-1010”?

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18). Identify the sign bit representation from the 4 bit subtraction input “1010”?

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19). Identify the MSB bit of the 4 digit number “0011”?

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20). Identify the LSB bit of the 4 digit number “0011”?

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21). In how many ways a “-ve” signed binary digits in binary subtraction can be represented?

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22). A complementary representation is binary number systems can be implemented in ____ methods?

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23). Which of the following is the primary rule to be followed while performing Binary subtraction?

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24). Identify the value of binary subtraction (1101101-11011)?

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25). Which of the following step need to be considered in absence of equal number of digits between minuend and subtrahend?

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Binary Subtractor Interview Questions and Answers

26). Which of the following is the complement of 0?

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27). Which of the following is the complement of 1?

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28). Which of the following is the 2’s complement of the value “ 0011011?

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29). Binary subtractor is represented using _____ ways?

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30). Which of the following component can perform binary subtractions?

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31). On how many minimum digits binary subtraction is performed?

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32). Which of the following is the conversion method used while performing binary subtraction?

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33). On which of the following bit binary subtraction is performed?

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34). 1’s complement on binary s subtraction is performed using ____ ways?

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35). Binary subtractors are of ____ types?

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36). A binary subtractors is a ____ type of device?

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Read more about Combinational Circuits.
37). Which of the following is the representation of binary subtraction “A,B”?

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38). A subtractor uses ____ number of gates?

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39). Which of the following is the output of half subtractor difference (A,B)?

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40). Which of the following is the output of half subtractor borrow (A,B)?

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41). At which of the following gate a difference bit is obtained in a binary half subtractor?

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42). At which of the following gate a Borrow bit is obtained in a binary half subtractor?

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43). Which of the following is the output of AND gate with input 0,0?

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44). Which of the following is the output of AND gate with input 0,1?a

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45). Which of the following is the output of AND gate with input 1,0?

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46). Which of the following is the output of AND gate with input 1,1?

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47). Which of the following is the output of NOT gate with input is “0”?

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48). Which of the following is the output of NOT gate with input is “1”?

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49). Which of the following is the output of XOR gate with input is “00”?

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50). Which of the following is the output of XOR gate with input is “01”?

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Binary Subtractor Important Questions for Interviews

51). Which of the following is the output of XOR gate with input is “10”?

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52). Which of the following is the output of XOR gate with input is “11”?

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53). Identify the logic gate from the following figure?

Logic Gate

Logic Gate

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54). Identify the logic gate from the following figure?

Logic Gate

Logic Gate

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55). Identify the logic gate from the following figure?

Logic Gate

Logic Gate

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56). Identify the logic gate from the following figure?

Logic Gate

Logic Gate

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57). How many half subtractors are required in a full subtractor?

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58). How many inputs do a full subtractor consist of?

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59). How many outputs a full subtractor consist of?

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60). Which of the following is the Difference output of full subtractor with input “00” and Bin “0”?

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61). Which of the following is the Difference output of full subtractor with input “01” and Bin “0”?

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62). Which of the following is the Difference output of full subtractor with input 10 and Bin 0?

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63). Which of the following is the Difference output of full subtractor with input “11” and Bin “0”?

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64). Which of the following is the Difference output of full subtractor with input “1,1” and Bin “1”?

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65). Which of the following is the Difference output of full subtractor with input “1,0” and Bin “1”?

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66). Which of the following is the Difference output of full subtractor with input “0,1” and Bin “1”?

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67). Which of the following is the Difference output of full subtractor with input “0,0” and Bin “1”?

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68). Which of the following is the Borrow output of full subtractor with input “0,0” and Bin “1”?

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69). Which of the following is the Borrow output of full subtractor with input “0,1” and Bin “1”?

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70). Which of the following is the Borrow output of full subtractor with input “1,0” and Bin “1”?

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71). Which of the following is the Borrow output of full subtractor with input “1,1” and Bin “1”?

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72). Which of the following is the Borrow output of full subtractor with input “0,0” and Bin “0”?

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73). Which of the following is the Borrow output of full subtractor with input “0,1” and Bin “0”?

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Read more about Full Subtractor.
74). Which of the following is the Borrow output of full subtractor with input “1,0” and Bin “0”?

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75). Which of the following is the Borrow output of full subtractor with input “1,1” and Bin “0”?

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Binary Subtractor Quiz Questions and Answers.

76). How many types of logic gates are required while designing Full subtractor?

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77). Which of the following is the output of 3 bit binary subtractor difference equation?

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78). Which of the following is the output of 3 bit binary subtractor borrow equation?

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79). How many bits binary based full subtractor is required for n bit binary subtractor?

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80). Which of the following are the IC’s that performs binary subtraction?

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81). Which of the following is the Bout value of half subtractor when X>Y?

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82). Which of the following is the Bout value of half subtractor when X<Y?

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83). Logical gates are designed using __________?

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Read more about Diodes.
84). Which of the following are the examples of logic circuits?

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Read more about MUX.
85). A k-map contains ____ number of components?

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86). Which of the following is the full form of K-map?

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88). A K-map is of _____ dimensions?

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89). A Binary subtrator uses K-map to represent _____ coordinates as 2D representation?

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90). Which of the following types of variables do a k-map minimizes?

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91). Which of the following scientist developed K-map?

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92). Which of the following is cell value for n-variables in K-map?

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93). Which of the following is the 1st step of K-map?

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Read more about K-map.
94). Which of the following is the 2 nd step of K-map?

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95). Which of the following is the 3 rd step of K-map?

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96). Which of the following is the 4 th step of K-map?

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97). Which of the following is the 5 th step of K-map?

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98). How many types of K-maps are available?

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99). Which of the following is the cell value of 2 Variable K-map?

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100). Which of the following is the cell value of 3 Variable K-map?

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