Deck 5: Numbering Systems

Question 1

How do you convert a negative binary number to the decimal equivalent?

Answer 1

To convert a negative binary number to the decimal equivalent, the negative binary display is complemented, 1 is added, the binary sum is converted to decimal, and the negative sign (-) is added.

Question 2

Any number that uses an exponent of 0, such as 10⁰, has a place value of 10.

Answer 2

False

Question 3

The ASCII code uses different combinations of 8 bit binary (base 2) information for communication of data.

Answer 3

False

Question 4

The ____________________ system is used when large numbers need to be processed.

Question 5

Allen-Bradley uses the ____________________ numbering system for I/O addressing for the PLC-5 family.

Question 6

Mathematically, each place value is expressed as a digit number times a power of the base, or 10, in the decimal numbering system.

Question 7

The ____________________ system uses ten unique numbers, or digits, which are 0 through 9.

Question 8

What is the BCD system and why was it created?

Question 9

The first step in converting 16-bit binary to hexadecimal is to group the 16-bit binary word into groups of four (conversion to BCD).

Question 10

How is ASCII information often expressed?

Question 11

Describe the hexadecimal system.

Question 12

Describe even parity.

Question 13

A binary number is always indicated by placing a 2 in superscript to the right of the units digit.

Question 14

An eighth bit is often used by programmers to provide error checking of information that is transmitted. This eighth bit is called the ____________________ bit.

Question 15

For systems that operate on ____________________ parity, the parity bit is used to make the total of 1s add up to an odd number.