Designing a 4 Bit Full Adder Subtractor Layout Using Cadence
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?
HintEven number of bits.
2). Which of the following is the low logic?
HintLogic low.
3). Which of the following is the high logic?
HintLogic high.
4). Which of the following is the base value of binary subtraction?
HintDecimal value.
5). A base 10 in binary number system is called__________?
HintOther way of expressing number system in fractional values.
6). How many parts do a binary subtraction consist of?
HintOdd number.
7). Which of the following is the first step of binary subtraction?
HintChoose values.
8). Which of the following is the second step of binary subtraction?
HintPerform mathematical operation.
9). Which of the following is the third step of binary subtraction?
HintPerform further operation after subtraction.
10). Which of the following is the third step of binary subtraction?
HintFinal step.
11). Which of the following is the binary subtraction output of 0011010-001100?
HintBinary value of 26-12=14.
12). Which of the following is the representation of binary subtraction of 34 -20?
HintRepresented as base values of 10.
13). Which of the following is the positive sign in binary subtraction?
HintLogic low.
14). Which of the following is the negative sign in binary subtraction?
HintLogic high,
15). A binary value 0 represents _____ logic?
HintMinimum value.
16). A binary value 1 represents _____ logic?
HintLogic 1.
17). Identify the sign bit representation from the 4 bit subtraction input "-1010"?
HintA sign bit representation from the 4 bit subtraction input "-1010"?
18). Identify the sign bit representation from the 4 bit subtraction input "1010"?
Hint+ sign representation in binary format is?
19). Identify the MSB bit of the 4 digit number "0011"?
HintLogic low.
20). Identify the LSB bit of the 4 digit number "0011"?
HintLogic high.
21). In how many ways a "-ve" signed binary digits in binary subtraction can be represented?
HintEven number of ways.
22). A complementary representation is binary number systems can be implemented in ____ methods?
HintDigital ALU operations.
23). Which of the following is the primary rule to be followed while performing Binary subtraction?
HintLogic high.
24). Identify the value of binary subtraction (1101101-11011)?
Hint1101101-11011=?
25). Which of the following step need to be considered in absence of equal number of digits between minuend and subtrahend?
HintAdd binary digits to the data for making them equal.
Binary Subtractor Interview Questions and Answers
26). Which of the following is the complement of 0?
HintLogic high.
27). Which of the following is the complement of 1?
HintLogic low.
28). Which of the following is the 2's complement of the value " 0011011?
Hint1101101 +1100101 =?
29). Binary subtractor is represented using _____ ways?
HintOdd number of ways.
30). Which of the following component of binary subtractor performs subtractions?
HintComponents that is heart of computer.
31). On how many minimum digits binary subtraction is performed?
HintEven number.
32). Which of the following is the conversion method used while performing binary subtraction?
Hint0's and 1's representation.
33). On which of the following bit binary subtraction is performed?
HintLeast significant bit.
34). 1's complement on binary s subtraction is performed using ____ ways?
HintEven number of ways.
35). Binary subtractors are of ____ types?
HintEven number of types.
36). A binary subtractors is a ____ type of device?
HintDigital logic types.
37). Which of the following is the representation of binary subtraction "A,B"?
HintThe representation of binary subtraction "A,B" is similar to arithmetic subtraction.
38). A subtractor uses ____ number of gates?
HintOdd number of gates.
39). Which of the following is the output of half subtractor difference (A,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)?
HintA inverter gate.
41). At which of the following gate a difference bit is obtained in a binary half subtractor?
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?
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?
HintLogic low.
44). Which of the following is the output of AND gate with input 0,1?a
HintLogic low.
45). Which of the following is the output of AND gate with input 1,0?
HintLogic low.
46). Which of the following is the output of AND gate with input 1,1?
HintLogic high.
47). Which of the following is the output of NOT gate with input is "0"?
HintLogic high.
48). Which of the following is the output of NOT gate with input is "1"?
HintLogic low.
49). Which of the following is the output of XOR gate with input is "00"?
HintLogic low.
50). Which of the following is the output of XOR gate with input is "01"?
HintLogic high.
Binary Subtractor Important Questions for Interviews
51). Which of the following is the output of XOR gate with input is "10"?
HintLogic high.
52). Which of the following is the output of XOR gate with input is "11"?
HintLogic low.
53). Identify the logic gate from the following figure?
Logic Gate
HintAn inverter gate also called?
54). Identify the logic gate from the following figure?
Logic Gate
HintLogic gate that provides 1 when both the inputs are high.
55). Identify the logic gate from the following figure?
Logic Gate
HintA logic gate which is a combination of AND and OR gate.
56). Identify the logic gate from the following figure?
Logic Gate
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?
HintEven number of adders are required for a single full subtractor.
58). How many inputs do a full subtractor consist of?
HintOdd number of inputs.
59). How many outputs a full subtractor consist of?
HintDual number of output pins.
60). Which of the following is the Difference output of full subtractor with input "00" and Bin "0"?
HintLogic low.
61). Which of the following is the Difference output of full subtractor with input "01" and Bin "0"?
HintLogic high.
62). Which of the following is the Difference output of full subtractor with input 10 and Bin 0?
HintLogic high.
63). Which of the following is the Difference output of full subtractor with input "11" and Bin "0"?
HintLogic low.
64). Which of the following is the Difference output of full subtractor with input "1,1" and Bin "1"?
HintLogic high.
65). Which of the following is the Difference output of full subtractor with input "1,0" and Bin "1"?
HintLogic low.
66). Which of the following is the Difference output of full subtractor with input "0,1" and Bin "1"?
HintLogic low.
67). Which of the following is the Difference output of full subtractor with input "0,0" and Bin "1"?
HintLogic high.
68). Which of the following is the Borrow output of full subtractor with input "0,0" and Bin "1"?
HintLogic high.
69). Which of the following is the Borrow output of full subtractor with input "0,1" and Bin "1"?
HintLogic low.
70). Which of the following is the Borrow output of full subtractor with input "1,0" and Bin "1"?
HintLogic high.
71). Which of the following is the Borrow output of full subtractor with input "1,1" and Bin "1"?
HintLogic high.
72). Which of the following is the Borrow output of full subtractor with input "0,0" and Bin "0"?
HintLogic low.
73). Which of the following is the Borrow output of full subtractor with input "0,1" and Bin "0"?
HintLogic low.
74). Which of the following is the Borrow output of full subtractor with input "1,0" and Bin "0"?
HintLogic high.
75). Which of the following is the Borrow output of full subtractor with input "1,1" and Bin "0"?
HintLogic low.
Binary Subtractor Quiz Questions and Answers.
76). How many types of logic gates are required while designing Full subtractor?
HintOdd number.
77). Which of the following is the output of 3 bit binary subtractor difference equation?
HintSingle logical operation.
78). Which of the following is the output of 3 bit binary subtractor borrow equation?
HintProduct of terms.
79). How many bits binary based full subtractor is required for n bit binary subtractor?
HintMinimum value.
80). Which of the following are the IC's that performs binary subtraction?
HintLS and CD based IC type.
81). Which of the following is the Bout value of half subtractor when X>Y?
HintLogic low.
82). Which of the following is the Bout value of half subtractor when X<Y?
HintLogic high.
83). Logical gates are designed using __________?
HintElectronic components.
84). Which of the following are the examples of logic circuits?
HintSequential circuits.
Read more about MUX.
85). A k-map contains ____ number of components?
HintEven values.
86). Which of the following is the full form of K-map?
HintThe full form of K-map is Karnaugh Map.
88). A K-map is of _____ dimensions?
HintEven number of components.
89). A Binary subtrator uses K-map to represent _____ coordinates as 2D representation?
HintA Binary subtrator uses K-map to represent 3 terms.
90). Which of the following types of variables do a k-map minimizes?
HintA k-map minimizes variables such as 2,3,4,5.
91). Which of the following scientist developed K-map?
HintAn American physicist and mathematician scientist developed K-map.
92). Which of the following is cell value for n-variables in K-map?
HintValue expressed in terms of power.
93). Which of the following is the 1st step of K-map?
HintView groups.
Read more about K-map.
94). Which of the following is the 2 nd step of K-map?
HintFind terms.
95). Which of the following is the 3 rd step of K-map?
HintGrouping.
96). Which of the following is the 4 th step of K-map?
HintRepresent in equation.
97). Which of the following is the 5 th step of K-map?
HintSolve the equation to represent in minimum number of parameters.
98). How many types of K-maps are available?
HintOdd values.
99). Which of the following is the cell value of 2 Variable K-map?
Hint2^2=?
100). Which of the following is the cell value of 3 Variable K-map?
Hint2^3=?
Designing a 4 Bit Full Adder Subtractor Layout Using Cadence
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