Number Systems and Codes - General Question

Directions to Solve

Number Systems and Codes - General Question

1.

When using the repeated division by 2 method of converting from decimal to binary, one must write the first remainder as the:

A.	MSB
B.	MSB, provided the following sequence of remainders are written in descending order until the final remainder is achieved.
C.	LSB
D.	LSB, provided the final remainder is used to replace the original LSB, which is then moved to the MSB position.

Answer: Option C

Explanation:

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2.

How many BCD code bits and how many straight binary bits would be required to represent the decimal number 643?

A.	12 BCD, 12 binary
B.	12 BCD, 10 binary
C.	12 BCD, 9 binary
D.	16 BCD, 9 binary

Answer: Option B

Explanation:

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3.

Which of the following is the primary advantage of using the BCD code instead of straight binary coding?

A.	Fewer bits are required to represent a decimal number with the BCD code.
B.	The relative ease of converting to and from decimal.
C.	BCD codes are easily converted to hexadecimal codes.
D.	BCD codes are easily converted to straight binary codes.

Answer: Option B

Explanation:

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4.

Select one of the following statements that best describes the parity method of error detection.

A.	Parity checking is best suited for detecting single-bit errors in transmitted codes.
B.	Parity checking is not suitable for detecting single-bit errors in transmitted codes.
C.	Parity checking is capable of detecting and correcting errors in transmitted codes.
D.	Parity checking is best suited for detecting double-bit errors that occur during the transmission of codes from one location to another.

Answer: Option A

Explanation:

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5.

Assign the proper even parity bit to the code 1100001.

A.	11100001
B.	1100001
C.	01100001
D.	01110101

Answer: Option A

Explanation:

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6.

The base of the hexadecimal system is:

A.	eight
B.	sixteen
C.	ten
D.	two

Answer: Option B

Explanation:

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7.

Convert 527₈ to binary.

A.	011100111
B.	101010111
C.	343
D.	111010101

Answer: Option B

Explanation:

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8.

Convert 527₁₆ to binary.

A.	343
B.	001101000111
C.	010100100111
D.	011100100101

Answer: Option C

Explanation:

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