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Questions and Answers
What binary representation is also known as the 8421 code?
What binary representation is also known as the 8421 code?
Which of the following is NOT a type of binary code mentioned?
Which of the following is NOT a type of binary code mentioned?
In Binary-Coded Decimal (BCD), how is the decimal digit '5' represented?
In Binary-Coded Decimal (BCD), how is the decimal digit '5' represented?
Which of the following codes is a weighted binary code?
Which of the following codes is a weighted binary code?
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What is the primary use of error detection codes?
What is the primary use of error detection codes?
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How many binary digits are used in BCD to represent the decimal number '999'?
How many binary digits are used in BCD to represent the decimal number '999'?
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Which code would most likely be used to represent both numeric and non-numeric data?
Which code would most likely be used to represent both numeric and non-numeric data?
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What is the binary equivalent of the decimal number '3' in BCD?
What is the binary equivalent of the decimal number '3' in BCD?
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Which of the following best describes a non-weighted code?
Which of the following best describes a non-weighted code?
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Which decimal number corresponds to the BCD representation 0110?
Which decimal number corresponds to the BCD representation 0110?
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What is the BCD representation of the decimal number 5648?
What is the BCD representation of the decimal number 5648?
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Which of the following binary numbers converts to a valid BCD code?
Which of the following binary numbers converts to a valid BCD code?
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What is the total number of possible code groups in the ASCII code system?
What is the total number of possible code groups in the ASCII code system?
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What type of device commonly uses BCD for interfacing?
What type of device commonly uses BCD for interfacing?
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Which of the following is NOT included in a complete alphanumeric code set?
Which of the following is NOT included in a complete alphanumeric code set?
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What is the decimal equivalent of the BCD number 0110 1001?
What is the decimal equivalent of the BCD number 0110 1001?
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Which alphanumeric code is a 7-bit code?
Which alphanumeric code is a 7-bit code?
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Why is the BCD code 0111 1100 0001 classified as an error?
Why is the BCD code 0111 1100 0001 classified as an error?
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What is the correct binary representation for the word 'email' in ASCII?
What is the correct binary representation for the word 'email' in ASCII?
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What is represented by the BCD number '10001101' when correctly divided into nibbles?
What is represented by the BCD number '10001101' when correctly divided into nibbles?
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Study Notes
Binary Codes
- Binary codes represent decimal numbers using binary digits (0 and 1).
- Weighted codes use predefined weights for each binary digit to represent a decimal number. Examples include BCD (8421), 2421, 6311.
- Non-weighted codes, such as Excess-3 and Gray code, don't use weighted digits.
- Alphanumeric codes represent both numbers and letters/characters. Examples include ASCII (American Standard Code for Information Interchange) and EBCDIC (Extended Binary Coded Decimal Interchange Code).
- Error detection codes, like parity codes, help identify errors during data transmission.
BCD (8421) Code
- Each decimal digit is represented by its four-bit binary equivalent.
- Example: 937.25 in BCD is 1001 0011 0111 . 0010 0101
- BCD representation is different from converting the whole number to binary.
- BCD is less efficient than straight binary; it requires more bits to represent the same decimal number.
Alphanumeric Codes
- Used to represent both numeric and nonnumeric data.
- The ASCII code is a widely used alphanumeric code.
- Other Codes include EBCDIC.
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Description
This quiz focuses on the various types of binary codes, including weighted and non-weighted codes, BCD (8421) representation, and alphanumeric codes such as ASCII. Explore the differences and applications of each code type, as well as concepts like error detection. Test your understanding of how binary systems work in data representation.
