Chapter 3

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The acronym BCD stands for:. A. Binary-Coded decimal B. Binary Code Decoder C. Base code decoder D. Base-Coded decimal

A. Binary-Coded decimal

Which of the following number systems has a base of 16? A. Hexadecimal B. Octal C. Binary-Coded decimal D. Gray Code

A. Hexadecimal

In the sign bit position, a 1 indicates a(n): A. Negative number B. Positive Number C. Octal code. D. Hexadecimal code

A. Negative number

The main advantage of using the Gray code is: A. Only one digit changes as the number increases. B. It can be easily converted to decimal numbers. C. Large decimal numbers can be written using fewer digits D. It uses the number 2 as its base

A. Only one digit changes as the number increases.

A(n) bit is used to detect errors that may occur while a word is moved. A. parity B. Negative C. Positive D. Overflow

A. Parity

The decimal number 213 would be written in BCD as: A. 0010 0001 0011. B. 1101 1000 1100. C. 0111 1001 0011. D. 1011 1101 0101.

A. 0010 0001 0011.

In any number system, the position of a digit that represents part of the number has a weighted value associated with it. A. True B. False

True

Usually a group of 8 bits is a byte, and a group of one or more bytes is a word. A. True B. False

True

The decimal system uses the number 9 as its base. A) False B) True

False

The radix of a number system is the same as the base. A. True B. False

True

The binary number 101101 would be written in decimal as: A. 21 B. 36 C. 45 D. 62

C. 45

The hexadecimal number system consists of 16 digits including the numbers 0 through 9 and letters A through F. A. True B. False

A. True

The hexadecimal number 2D9 would be written in binary as: A. 0010 1101 1001. B. 1001 1011 0010. C. 1100 1111 0010. D. 0010 1011 1001

A. 0010 1101 1001

The decimal number 28 would be written in binary as: A. 11100 B. 00111 C. 10110 D. 01011

A. 11100

The decimal number 15 world be written in binary as A. 1111 B. 1000 C. 4C D. 00011001

A. 1111

The binary number 101 has the decimal equivalent of A. 3 B. 101 C. 41 D. 5

D. 5

All digital computing devices perform operations in binary. A) True B) False

True

The 2's complement form of a binary number is the binary number that results when: A. All the 1's are changes to 0's B. all the O's are changed to 1's C. 1 is added to the 1's complement D. both a and b

C. 1 is added to the 1's complement

The hexadecimal number C4 would be written in decimal as: A. 21 B. 48 C. 182 D. 196

D. 196

In the Gray code there is a maximum of one bit change between two consecutive numbers. A. True B. False

True

The base of a number system determines the total number of unique symbols used by that system. A. True B. False

True


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