OCR 1.2 Data Rep Exam

What does BIT stand for? [1]

How many bits is required to store 23 different colours in a bitmap image? [1]

Drag each label to the correct reference on the image. [1]

a

b

c

d

nibble

bit

binary

byte

Order the following file sizes from smallest to largest [2]
Tip: Convert all to one measurement e.g. Kilobytes

• 3000 Kilobytes

• 0.5 Gigabytes

• 2 Megabyte

• 2000 Bits

• 600 Nibbles

Order the following file sizes from smallest to largest [1]

• Kilobyte

• Byte

• Terabyte

• Megabyte

• Gigabyte

Why do computer process data in binary form? [1]

• Because it is easier for human beings to understand

• Because computers contain circuits with switches which have two states (on and off)

• Because computers contain circuits with switches which have 10 states

• Because data in decimal form is processed more slowly

Convert the decimal number 47 to 8-bit binary. [1]

Use the paper handed to you for working.

Convert the binary number 10110101 to decimal. [1]

Use the paper handed to you for working.

Add the following binary numbers: 10110 + 11011 [1]
Use the paper handed to you for working.

Perform a 2-bit left shift on the binary number 1110 0110 [1]
Use the paper handed to you for working.