PLC - Chapter 3: Number Systems and Codes

Question 1 of 40

1

The decimal system has a base of __.

Select one of the following:

10
100
1000
2

Explanation

Question 2 of 40

1

The decimal number 7 would be written in binary as 1011.

Select one of the following:

True
False

Explanation

Question 3 of 40

1

To express a number in decimal requires fewer digits than in the binary system.

Select one of the following:

True
False

Explanation

Question 4 of 40

1

For a base 2 number system, the weight value associated with the 3rd digit would be 4.

Select one of the following:

True
False

Explanation

Question 5 of 40

1

Click on each orange point and write the correct answer.

Label the "Sign Bit" and the "Magnitude Bits"

Explanation

Question 6 of 40

1

What is the decimal value of binary 110010?

Select one of the following:

48
13
26
7

Explanation

Question 7 of 40

1

The decimal number 15 would be written in binary as

Select one of the following:

1111
4C
1000
00011001

Explanation

Question 8 of 40

1

Data can be stored in one 16-bit word as two separate groups of 8-bit data.

Select one of the following:

True
False

Explanation

Question 9 of 40

1

To represent a negative number in 1's complement, you simply take the number's magnitude and flip all the bits (i.e. 1 becomes 0, and 0 becomes 1).

Select one of the following:

True
False

Explanation

Question 10 of 40

1

Fill the blank space to complete the text.

+3 binary representation: 0011
-3 binary representation: (1's complement)

Explanation

Question 11 of 40

1

The octal numbering system has a base of 9.

Select one of the following:

True
False

Explanation

Question 12 of 40

1

Fill the blank spaces to complete the text.

The weights for the octal numbering system are: 1, , , 512, ...

Explanation

Question 13 of 40

1

Numbers 8 and 9 are not allowed in the octal numbering system.

Select one of the following:

True
False

Explanation

Question 14 of 40

1

Click on the orange point and select the correct answer.

Fill in the missing number.

Explanation

Question 15 of 40

1

Click on each orange point and write the correct answer.

Convert this octal number to binary.

Explanation

Question 16 of 40

1

Fill the blank spaces to complete the text.

The hexadecimal numbering system can be summarized as follows:
Sixteen digits: 0, 1, 2, 3, 4, 5, , , , , , , , , ,

Explanation

Question 17 of 40

1

The weights of the hexadecimal system are powers of base 16 (i.e. 1, 16, 256, etc.).

Select one of the following:

True
False

Explanation

Question 18 of 40

1

To convert a hexadecimal number to its decimal equivalent, the hexadecimal digits in the columns are divided by the base 16 weight.

Select one of the following:

True
False

Explanation

Question 19 of 40

1

Click on each orange point and write the correct answer.

Convert this hex number into binary.

Explanation

Question 20 of 40

1

Select from the dropdown list to complete the text.

The BCD (Binary-Coded Decimal) numbering system provides a convenient way of handling ( large, small ) numbers that need to be inputted to or outputted from a PLC.

Explanation

Question 21 of 40

1

Click on each orange point and write the correct answer.

Convert this decimal number into a BCD number.

Explanation

Question 22 of 40

1

Fill the blank spaces to complete the text.

This instruction will convert the binary bit pattern at the source address , into a bit pattern of the same decimal value as the destination address, . The instruction executes every time it is scanned and the instruction is true.

Explanation

Question 23 of 40

1

The Gray code is a special type of binary code that uses position weighting.

Select one of the following:

True
False

Explanation

Question 24 of 40

1

Fill the blank spaces to complete the text.

ASCII stands for for . It is an alphanumeric code because it indicates letters as well as numbers.

Explanation

Question 25 of 40

1

Fill the blank space to complete the text.

Gray codes are used with for accurate control of the motion of robots, machine tools, and servomechanisms.

Explanation

Question 26 of 40

1

Fill the blank space to complete the text.

Some PLC communications systems use a bit to check the accuracy of data transmission. For example, when data are transferred between PLCs, one of the binary bits may accidentally change states.

Explanation

Question 27 of 40

1

The two systems of parity normally used are odd and even.

Select one of the following:

True
False

Explanation

Question 28 of 40

1

Select from the dropdown lists to complete the text.

Odd parity means that the total number of binary 1 bits in the character, including the parity bit, is ( odd, even ). Even parity means that the total number of binary 1 bits in the character, including the parity bit, is ( even, odd ).

Explanation

Question 29 of 40

1

In the binary system + and – symbols are used to indicate whether a number is positive or negative.

Select one of the following:

True
False

Explanation

Question 30 of 40

1

The octal number 153 would be written in binary as:

Select one of the following:

011 101 001
011 111 101
001 101 011
010 100 011

Explanation

Question 31 of 40

1

What is the decimal equivalent for the BCD number 1000 0100 0010 0001?

Select one of the following:

8421
7863
1234
3728

Explanation

Question 32 of 40

1

The Gray code is set up so that as we progress from one number to the next, only one bit changes.

Select one of the following:

True
False

Explanation

Question 33 of 40

1

Which code is used to convert the keystrokes on the keyboard of a computer for the processor?

Select one of the following:

BCD
HEX
ASCII
OCTAL

Explanation

Question 34 of 40

1

A parity bit is used to check the _______ of data transmission.

Select one of the following:

speed
type
accuracy
time

Explanation

Question 35 of 40

1

What is the sum of binary numbers 1100 and 1011?

Select one of the following:

10110
10111
11100
00111

Explanation

Question 36 of 40

1

Which instruction is used to compare the relative magnitude of two quantities?

Select one of the following:

Add
Subtract
Multiply
Less Than

Explanation

Question 37 of 40

1

The process for dividing one binary number by another is the same for both binary and decimal numbers.

Select one of the following:

True
False

Explanation

Question 38 of 40

1

Click on the orange point and write the correct answer.

Solve this.

Explanation

Question 39 of 40

1

	Created by ihateseneca about 11 years ago

A quiz by Allison for her Joey

PLC - Chapter 3: Number Systems and Codes

PLC - Chapter 3: Number Systems and Codes

Question 1 of 40

The decimal system has a base of __.

Select one of the following:

Explanation

Question 2 of 40

The decimal number 7 would be written in binary as 1011.

Select one of the following:

Explanation

Question 3 of 40

To express a number in decimal requires fewer digits than in the binary system.

Select one of the following:

Explanation

Question 4 of 40

For a base 2 number system, the weight value associated with the 3rd digit would be 4.

Select one of the following:

Explanation

Question 5 of 40

Click on each orange point and write the correct answer.

Label the "Sign Bit" and the "Magnitude Bits"

Explanation

Question 6 of 40

What is the decimal value of binary 110010?

Select one of the following:

Explanation

Question 7 of 40

The decimal number 15 would be written in binary as

Select one of the following:

Explanation

Question 8 of 40

Data can be stored in one 16-bit word as two separate groups of 8-bit data.

Select one of the following:

Explanation

Question 9 of 40

To represent a negative number in 1's complement, you simply take the number's magnitude and flip all the bits (i.e. 1 becomes 0, and 0 becomes 1).

Select one of the following:

Explanation

Question 10 of 40

Fill the blank space to complete the text.

+3 binary representation: 0011 -3 binary representation: (1's complement)

Explanation

Question 11 of 40

The octal numbering system has a base of 9.

Select one of the following:

Explanation

Question 12 of 40

Fill the blank spaces to complete the text.

The weights for the octal numbering system are: 1, , , 512, ...

Explanation

Question 13 of 40

Numbers 8 and 9 are not allowed in the octal numbering system.

Select one of the following:

Explanation

Question 14 of 40

Click on the orange point and select the correct answer.

Fill in the missing number.

Explanation

Question 15 of 40

Click on each orange point and write the correct answer.

Convert this octal number to binary.

Explanation

Question 16 of 40

Fill the blank spaces to complete the text.

The hexadecimal numbering system can be summarized as follows: Sixteen digits: 0, 1, 2, 3, 4, 5, , , , , , , , , ,

Explanation

Question 17 of 40

The weights of the hexadecimal system are powers of base 16 (i.e. 1, 16, 256, etc.).

Select one of the following:

Explanation

Question 18 of 40

To convert a hexadecimal number to its decimal equivalent, the hexadecimal digits in the columns are divided by the base 16 weight.

Select one of the following:

Explanation

Question 19 of 40

Click on each orange point and write the correct answer.

Convert this hex number into binary.

Explanation

Question 20 of 40

+3 binary representation: 0011
-3 binary representation: (1's complement)

The hexadecimal numbering system can be summarized as follows:
Sixteen digits: 0, 1, 2, 3, 4, 5, , , , , , , , , ,

The BCD (Binary-Coded Decimal) numbering system provides a convenient way of handling ( large, small ) numbers that need to be inputted to or outputted from a PLC.

Odd parity means that the total number of binary 1 bits in the character, including the parity bit, is ( odd, even ). Even parity means that the total number of binary 1 bits in the character, including the parity bit, is ( even, odd ).