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BCD Question & Answers

November 7, 2022 By WatElectronics

This article lists 75 BCD MCQs for engineering students. All the BCD Questions & 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 on the fundamentals of BCD.

BCD stands for binary coded decimal, used in electronic and computing systems. It has a base of 2 and a fixed of 4 or 8 bits with a sign bit overflow or error. The number form that BCD encodes is called the decimal form.

This BCD encoding consists of 2 methods packed and unpacked. Masking and shifting operation is deployed during packed/unpacked BCD digit. In the unpacked type of BCD number decimal-based digit is considered as 1 byte which is in an encoded format and the remaining 4 bits have no value.

A packed type of BCD number 2 decimal digits is encoded as 1 byte. This packed type of BCD benefits in terms of masking, less storage, and greater efficiency.

They are deployed in Decimal computers, IBM system/360, and Digital Equipment VAX. The BCD-based counter uses LEDs to convey the binary-based values.

1). Which of the following number form does BCD encodes?

Hint
Read more about BCD 
2). Which of the following is the term used for 10 states BCD?

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3). Which of the following is the application of BCD?

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4). ___ is defined as 4 it binary value?

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5). Which of the following are the methods used for BCD encoding?

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6). ____ operation is deployed during packed/unpacked BCD digit?

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7). Which of the following is the representation of shift left?

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8). Which of the following is the representation of shift right?

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9). In which of the following type of BCD number decimal based digit is considered as 1 byte which is in encoded format and remaining 4 bits has no value?

Hint
10). In which of the following type of BCD number, 2 decimal digits are encoded as 1 byte?

Hint
11). Which of the following is the BCD type form of example 0000 1001 0000 0001?

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12). Which of the following is the BCD type form of example 1001 0001?

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13). Which of the following is the advantage of packed BCD?

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14). Which of the following is the base of binary?

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15). Which of the following is the base of decimal?

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16).Which of the following is the binary number representation of 9?

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17). Which of the following is the BCD representation of 357?

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18). Which of the following is the term for binary power?

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19). In which of the following branch does BCD plays vital role?

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20). Which of following is the first step of binary to bcd conversion step?

Hint

BCD MCQ for Exams

21). Which of following is the second step of binary to bcd conversion step?

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22). BCD based counter uses ___ to convey the binary based values?

Hint
Read more about LED’s 
23). Which of the following operations are performed using BCD?

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24). Which of the following is the BCD addition output of 0,0?

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25). Which of the following is the BCD addition output of 0,1 or 1,0?

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26). Which of the following is the BCD addition output of 1,1?

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27). Which of the following is the BCD addition output of 111?

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28). Which of the following Processors provide BCD addition?

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29). Which of the following is the output for BCD subtraction 0000 0011 0101 0111 & 1001 0101 0110 1000?

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30). Which of the following is representation of ‘A’ in BCD?

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31). ___ number of bits store BCD?

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32). Which of the following is the representation of A16?

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33). Which of the following is the binary equivalent of 0?

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34). Which of the following is the formula of dividend?

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35). Which of the following is the binary value of 3?

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36). Which of the following formula is correct?

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37). Abbreviate BCD?

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38). Identify the non reflective based code?

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39). Which of the following is the ASCII value of ‘a’?

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40). Which of the following is the ASCII value of A?

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Read more about ASCII 
41). Abbreviate ASCII?

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42). ___ is the term used for expressing BCD digits?

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43). ___ is the decimal based equivalent form of binary number 0.0111?

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44). Which of the following in binary sequence has smallest positional based weight?

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45). ____ is used for simplifying boolen algebra type expression?

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46). K map is abbreviated as?

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47). K-map is ___ dimensional code?

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48). Which of the following code fashion k-map is ordered?

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49). SOP is implemented using ____ logic gates?

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50). POP is implemented using ____ logic gates?

Hint

BCD MCQ for Students

51). K-map is ___ type of representation?

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52). Which of the following are the forms of K-map?

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53). Which of the following is the representation of 0 in BCD?

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54). Which of the following is the representation of 1 in BCD?

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55). Which of the following is the representation of 2 in BCD?

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56). Which of the following is the representation of 3 in BCD?

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57). Which of the following is the representation of 4 in BCD?

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58). Which of the following is the representation of 5 in BCD?

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59). Which of the following is the representation of 6 in BCD?

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60). Which of the following is the representation of 7 in BCD?

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61). Which of the following is the representation of 8 in BCD?

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62). Which of the following is the representation of 9 in BCD?

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63). Which of the following is the representation of 10 in BCD?

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64). Which of the following is the representation of 11 in BCD?

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65). Which of the following is the representation of 12 in BCD?

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BCD MCQ for Quiz

66). Which of the following is the representation of 13 in BCD?

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67). Which of the following is the representation of 14 in BCD?

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68). Which of the following is the representation of 15 in BCD?

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69). Which of the following is representation of 123 in BCD?

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70). Logic 1 is ____ power?

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71). Logic 0 is ____ power?

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72). Which of the following are basic logic gates?

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73). Which of the following are the universal logic gates?

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74). Which of the following are used while designing logic gates?

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75). Which of the following are compound logic gates?

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For More MCQs
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