2.1 Binary

What number system do computers primarily use?

• Binary

• Hexadecimal

• Octal

• Decimal

How many base numbers does the binary number system use?

• 2

• 16

• 10

• 8

What is the base number of the hexadecimal system?

• 2

• 16

• 8
• 10

What does each digit in a hexadecimal number represent?

• 16 bits of a binary number

• 8 bits of a binary number

• 4 bits of a binary number

• 2 bits of a binary number

What are the digits used in the hexadecimal system?

• 0-8 and A-E

• 0-7 and A-D

• 0-9 and A-F

• 0-6 and A-C

In binary, how is the value affected by each place the digits move to the left?

• Doubles

• Remains the same

• Halves

• Increases by 10

What happens to the binary value when it is shifted to the right

• Doubles

• Increases by 10

• Decreases by 10

• Halves

What is the maximum range of an 8-bit binary number using two's complement?

• 0 to 255

• -255 to 255

• -127 to 127

• -128 to 127

In two's complement, how is a negative number represented?

• Inverting all bits and adding 1

• Using the highest bit as a sign indicator

• Subtracting the number from the largest possible value

• Inverting all bits

Convert the 4-bit bianry number 1101 to denary

• 12

• 13

• 14

• 15