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WorksheetsY10 System Architecture
Total questions: 19
Worksheet time: 10mins
What is Clock Speed measured in?
Bits
Seconds
Hertz
Electrical pulses
Which of the following are main components of the CPU? Click all that apply.
ROM
Arithmetic Logic Unit (ALU)
Control Unit (CU)
Cache and Registers
RAM
In Von Neumann Architecture, the stored-program concept stores what in what?
Program instructions and Data in Secondary Memory
Data in Memory
The memory address in registers
Program instructions and Data in Primary memory
What is a Register?
A small amount of high-speed read only memory contained within the processor
A small amount of high-speed random access memory contained within the processor
Sort the following memory types by speed (Slowest to Fastest):
RAM 2. HDD 3. SSD 4. Registers 5. Cache 6. CPU
1, 3, 5, 6, 2, 4
2, 3, 1, 4, 5, 6
2, 3, 1, 5, 4, 6
3, 2, 1, 4, 5, 6
Which component of the CPU holds the address of the next instruction to be fetched from memory?
Program counter (PC)
Memory address register (MAR)
Accumulator (ACC)
Memory Data Register (MDR)
Arithmetic Logic Unit (ALU)
What does Fetch Decode Execute cycle do?
Fetches instructions/data from main memory, Decodes instructions, Executes instructions.
Fetches RAM, Decode programmes, Executes the CPU
Fetches Instructions, Decodes Instructions, Executes Data.
Tick all options that happen in the FETCH CYCLE?
PC is incremented
The Instruction at the MAR address is read from RAM
The PC value is copied to the MAR
The instruction in the IR is decoded
The value in the MDR is written to the address in the MAR.
Tick all options that happen in the EXECUTE CYCLE?
IR is incremented
The data at the MAR address is read from RAM
The ALU performs any calculations required on the ACC
The instruction in the IR is decoded by the CU
The value in the MDR is written to the address in the MAR.
Tick all options that happen in the DECODE CYCLE?
PC is incremented
The Instruction at the MAR address is read from RAM
The PC value is copied to the MAR
The instruction in the IR is decoded by the CU
The value in the MDR is written to the address in the MAR.
Which component of the CPU performs calculations and logical expressions?
Program counter (PC)
Memory address register (MAR)
Accumulator (ACC)
Memory Data Register (MDR)
Arithmetic Logic Unit (ALU)
Which component of the CPU holds the result of an instruction before it is transferred to memory?
Program counter (PC)
Memory address register (MAR)
Accumulator (ACC)
Memory Data Register (MDR)
Arithmetic Logic Unit (ALU)
Which component of the CPU holds data to be written to/retrieved from memory?
Program counter (PC)
Memory address register (MAR)
Accumulator (ACC)
Memory Data Register (MDR)
Arithmetic Logic Unit (ALU)
Which component of the CPU holds the address of the next instruction to be retrieved from memory then executed?
Program counter (PC)
Memory address register (MAR)
Accumulator (ACC)
Memory Data Register (MDR)
Arithmetic Logic Unit (ALU)
What 3 factors can affect the speed of the CPU? Select all that apply.
Number of Cores
Amount of RAM
Amount of Cache
Clock Speed
Use of SSD over HDD
Which of these best defines an embedded system?
A computer system
A general purpose computer system
A dedicated computer system built into a device
A portable computer system
A computer system with no operating system
Which of the following is responsible for storing apps and software currently being used?
RAM
CPU
Hard disk drive
How many bits are in a byte of data?
4
6
8
