Year 7 · Computing · Computer systems · Lesson 3
Storage and data units
Units of data from bits and bytes to terabytes, converting between units, and the four types of storage: magnetic, solid state, optical and cloud.
17-minute video lesson
Teaching, worked examples and 20 practice questions solved step by step.
Watch free for a monthWhat your child will learn
- Order units of data
- Convert between units
- Compare types of storage
- Recommend storage for a purpose
The method
- Capacity.
- Speed.
- Durability.
- Cost -> recommend.
Key words: bit, byte, gigabyte, HDD, SSD, cloud storage.
Worked examples
The first three practice questions from the lesson, with every step.
Question 1
What is a bit?
- Step 1: 0 or 1
Answer: a single binary digit
Question 2
How many bits in a byte?
- Step 1: Eight
Answer: 8
Question 3
How many bytes in a kilobyte?
- Step 1: Kilo
Answer: 1000