WorksheetsOCR GCSE Computer Science – Unit 1.1 Systems Architecture Term 1
Total questions: 25
Worksheet time: 13mins
What does CPU stand for?
Central Processing Unit
Computer Power Unit
Central Performance Utility
Control Processing Unit
What is the main function of the CPU?
To store data
To execute instructions
To display graphics
To manage files
Which component performs arithmetic and logic operations?
RAM
Cache
ALU
Control Unit
What does the Control Unit do?
Executes instructions
Stores data
Manages the flow of data
Performs calculations
Which of these is a register in the CPU?
Hard Drive
Program Counter
Graphics Card
RAM
What does the Program Counter store?
The result of a calculation
The next instruction address
The current data
The CPU temperature
What is the purpose of the MAR?
To store data
To store addresses
To store instructions
To store results
What does the MDR hold?
The next instruction address
The data being transferred
The result of a calculation
The CPU speed
Which register stores the result of calculations?
Accumulator
MAR
MDR
Program Counter
What is the fetch-decode-execute cycle?
A way to store data
A way to process instructions
A way to display graphics
A way to connect devices
Which component stores frequently used data for quick access?
RAM
Cache
Hard Drive
ROM
What is the effect of a higher clock speed?
Slower processing
More instructions per second
Less power usage
More memory
What does having more cores in a CPU allow?
More storage
More simultaneous processing
Better graphics
Faster internet
Which CPU has better performance?
Single core, 2.0 GHz
Dual core, 1.5 GHz
Quad core, 3.0 GHz
Dual core, 3.1 GHz
What is the benefit of a larger cache?
More storage
Faster access to data
Better graphics
Lower temperature
What is an embedded system?
A general-purpose computer
A system built into another device
A gaming console
A desktop PC
Which of these is an example of an embedded system?
Laptop
Smartphone
Dishwasher
Server
Why are embedded systems used?
They are expensive
They are large
They are task-specific and efficient
They are slow
Which of these is NOT part of the CPU?
ALU
Control Unit
RAM
Registers
What does Von Neumann architecture use?
Separate memory for data and instructions
Single memory for data and instructions
No memory
Multiple CPUs
Which component sends signals to control other parts of the CPU?
ALU
Cache
Control Unit
RAM
What is the role of the Accumulator?
Stores the next instruction
Stores the result of calculations
Stores the CPU speed
Stores graphics
What is stored in the MDR?
The address of data
The data itself
The result of a calculation
The CPU temperature
What does the term 'core' refer to in a CPU?
A storage unit
A processing unit
A graphics unit
A power unit
Which of these affects CPU performance?
Monitor size
Clock speed
Keyboard type
Screen resolution
