A Level Computer Science 1.4.1

What are the 3 different number systems?

• Benary, Binary, Hex

• Denary, Binary, Hex

• Denary, Binary, Ox

What is binary related to?

• Humans

• Me

• The status of transistors within the CPU

How many bits are in a nibble?

• 1 byte

• 4 bytes

• 8 bits

• 4 bits

How many bits in a byte?

• 8 bytes

• 8 bits

• 4 bits

• 4 bytes

What does A represent in Hex?

• 9

• 11

• 10

• 8

Why do we not use sign and magnitude often?

• All bits are numerical, its too simple

• 1 bit is not a numerical value, Not all bits can be treated the same

• It's a long process so we look for something quicker

• The magnitude is too big

What is the mantissa?

• The range

• The exponent

• The SUM

• The number

What does the exponent control?

• The range

• The number

• The SUM

• The mantissa

What is denary 55 in 8-bit binary

• 10010011

• 00110111

• 00110110

• 11110000

What is hex 22 in 8-bit binary

• 00100011

• 00100010

• 00100110

• 00010001