Unit 3: Data 1

Binary numbers are made up of binary d_____. (bits)

The circuits in a computer's processor are made up of billions of _________. This is a tiny switch that is activated by the electronic signals it receives. The digits 1 and 0 used in binary reflect the on and off states of this switch.

Binary can be used to represent, Numbers, Text, Sound, Program instructions and .....

Which of the following is NOT a valid reason for the use of hexadecimal numbers?

• Make fewer mistakes when writing large numbers

• Quicker to write down/copy/transcribe

• They use less memory/RAM

• Take up less space ON A PAGE when writing down large numbers

Convert 0b 0100 0001 (Unsigned 8-bit integer) to Denary

• 32

• 33

• 64

• 65

Convert 0b 0000 0000 (Unsigned 8-bit integer) to Denary

• 255

• 234

• 208

• 0

Convert 0b 1001 1100 (Unsigned 8-bit integer) to Hexadecimal

• 0x 9C

• 0x 8D

• 0x 11

• 0x 2F

Convert 0b 1111 1110 (Unsigned 8-bit integer) to Hexadecimal

• 0x CD

• 0x CC

• 0x FE

• 0x 3F

Calculate 0b 0100 0001 (Unsigned 8-bit integer) * 0x 02

• 0b 0110 1011

• 0b 1000 0001

• 130

• 235

Calculate 0b 0101 0000 (Unsigned 8-bit integer) ÷ 4

• Underflow error

• 0b 0001 0100

• 0b 1010 0000

• Overflow error