Year 10 Pearson GCSE Computer Science - Half Term 1 Assessment

Florence is setting up a new computer and wants to understand its basic building blocks. Which statement best defines a bit in computing?

What is a nibble?

Chloe is organizing her digital photo collection and notices that each file size is measured in bytes. She wonders, a byte is equivalent to how many bits?

Lily is learning about how computers store information. Her teacher asks her which set lists types of data that can be represented in binary in a digital computer. What should Lily choose?

How many unique patterns can be represented with 2 bits?

Which expression gives the number of unique values representable with 16 bits (unsigned)?

James is working with digital sensors that send data in binary. One sensor sends the binary value 1000 0011. What is the unsigned denary value that James should record?

Mia is programming a digital lock that requires her to enter the correct 8-bit binary code for the number 99. Which 8-bit binary should Mia enter to represent the unsigned denary value 99?

Compute: 1000 0000 + 1111 0000 (8-bit unsigned). What is the result?

Which description best explains an overflow error in binary addition?