Exam code: H446
A charity uses a desktop computer to record financial donations that it receives. The computer contains a single core, 2.4GHz processor with 2MB cache.
The processor contains registers including the accumulator and the program counter. The contents of these registers are modified during the Fetch-Decode-Execute cycle.
State the name of three other registers that are used during the Fetch-Decode-Execute cycle.
Did this page help you?
A program written using the Little Man Computer instruction set is shown in Fig. 1.
Various registers are used when the program above is executed.
State what is meant by the term ‘register’.
Did this page help you?
OCR Insurance uses a computer system to calculate the price that customers pay for car insurance.
The computer system contains a CPU, GPU, RAM and ROM
State two factors that affect the performance of a CPU.
Did this page help you?
A charity uses a desktop computer to record financial donations that it receives. The computer contains a single core, 2.4GHz processor with 2MB cache.
The processor uses the Von Neumann architecture.
Give one way that the Harvard architecture differs from the Von Neumann architecture.
Did this page help you?
A charity uses a desktop computer to record financial donations that it receives. The computer contains a single core, 2.4GHz processor with 2MB cache
The processor contains registers including the accumulator and the program counter. The contents of these registers are modified during the Fetch-Decode-Execute cycle.
Describe how the accumulator is used during the Fetch-Decode-Execute cycle.
Did this page help you?
The processor contains registers including the accumulator and the program counter. The contents of these registers are modified during the Fetch-Decode-Execute cycle.
Describe how the program counter is used during the Fetch-Decode-Execute cycle.
Did this page help you?
The stored program concept uses the Fetch-Decode-Execute cycle to get the next instruction from memory and then execute it.
One of the instructions that may be fetched and executed as part of this cycle is a branch instruction.
State the name of the register that would be altered in the execute phase during a branch instruction.
Did this page help you?
Fig. 1 shows assembly code written using the Little Man Computer (LMC).
The program calculates and outputs the total amount that is donated to a charity in any particular day. Depending on the amount, an additional bonus may be added to each amount donated.
This program is run on a processor that allows pipelining.
Define the term ‘pipelining’.
Explain one benefit to the charity of using a processor that allows pipelining.
Did this page help you?
The CPU uses pipelining to improve efficiency.
Explain what is meant by the term ‘pipelining’
Did this page help you?
Explain why pipelining can improve the performance of the processor.
Did this page help you?
A program written using the Little Man Computer instruction set is shown in Fig. 1
Various registers are used when the program above is executed.
Explain how the accumulator is used when the line BRP pos is executed.
Did this page help you?
A charity uses a desktop computer to record financial donations that it receives. The computer contains a single core, 2.4GHz processor with 2MB cache.
The processor uses the Von Neumann architecture.
Describe what is meant by the term ‘Von Neumann architecture’.
Did this page help you?
A charity is concerned that the performance of their computer is not sufficient and wishes to replace the processor.
Give two features of a replacement processor that would increase the typical performance of the computer.
Did this page help you?
The stored program concept uses the Fetch-Decode-Execute cycle to get the next instruction from memory and then execute it.
Describe what happens during the fetch stage of the Fetch-Decode-Execute cycle.
You should state the different registers and buses that are used in your answer.
Three ways of improving the performance of a CPU are increasing the clock speed, adding more cores and using pipelining.
Explain how pipelining improves the performance of a CPU.
Did this page help you?