Year 9 GCSE 1.1 Progress Check

What is a computer?

• An electronic device that processes data and gives output
• A mechanical device that stores data and performs calculations

• A machine that performs calculations and can play games and music

• A tool used solely for entertainment

What does a computer use to process data?

• A set of instructions called a program
• Human decision-making and their inputs

• Random guesswork
• Data from cloud storage only

What is the purpose of the CPU?

• To carry out instructions from a program
• To store long-term files as well as temporary in RAM

• To manage the display screen and control the volume

• To control the internet connection

What cycle does the CPU repeatedly perform?

• Fetch-execute cycle
• Upload-download cycle
• Fetch, Read-write cycle

• Power-interrupt cycle

How many stages are in the fetch-execute cycle?

• Three
• Five
• Four
• Two

What is the first stage of the fetch-execute cycle?

• Fetch
• Decode
• Execute
• Store

What happens during the decode stage?

• The instruction is interpreted by the CPU
• The CPU sends data to the screen, printer or speakers

• The monitor is turned off
• A screenshot is saved

What happens during the execute stage?

• The CPU carries out the instruction
• The mouse sends a click signal
• The screen is refreshed
• The fan is turned on

What is clock speed?

• The number of cycles the CPU performs per second
• The time it takes for the monitor to refresh
• The speed in seconds that it takes for the CPU to execute, fetch and finally decode instructions

• The memory size of the CPU

How is clock speed measured?

• Hertz (Hz)
• Bits (b)
• Volts (V)
• Watts (W)