3.1. Computer architecture
A subsection of Computer Science, 2210, through 3. Hardware
Listing 10 of 31 questions
Vanessa writes a paragraph as an answer to an examination question about the central processing unit (CPU). Use the list given to complete Vanessa’s answer by inserting the correct six missing terms. Not all terms will be used. • Components • Data • Decoded • Executed • Fetched • Instructions • RAM • ROM • Secondary storage The CPU processes and . An instruction is from into the CPU where it is then . Once this has taken place the instruction is then .
2210_s19_qp_12
THEORY
2019
Paper 1, Variant 2
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Instructions are processed by a central processing unit (CPU) in a computer. Complete the paragraph about fetching an instruction into the CPU to be processed. Use the terms from the list. Some of the terms in the list will not be used. You should only use a term once. address arithmetic logic unit (ALU) binary control unit (CU) current instruction register (CIR) data denary driver fetch interrupt memory address register (MAR) memory data register (MDR) random access memory (RAM) read only memory (ROM) secondary storage signal The program counter contains the ……………………………………………………… of the next instruction to be processed; this is then sent to the ……………………………………………………… using the address bus. The address is then sent to the ……………………………………………………… . Once the address is received, the instruction stored at the location is sent to the ………………………………………………………, using the ……………………………………………………… bus. The instruction is then sent to the ……………………………………………………… that is built into the ……………………………………………………… . The CPU uses an instruction set to decode the instruction. State what is meant by an instruction set.
2210_s24_qp_12
THEORY
2024
Paper 1, Variant 2
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Six components of a computer system and six descriptions are shown. Draw a line to match each component with the most suitable description. Component Description Arithmetic Logic Unit (ALU) Buses Control Unit (CU) Immediate Access Store (IAS) Input/Output Registers Used to connect together the internal components of the CPU. Used to carry out calculations on data. Used to temporarily hold data and instructions during processing. Used to allow interaction with the computer. Used to hold data and instructions before they are processed. Used to manage the flow of data through the CPU.
2210_w17_qp_13
THEORY
2017
Paper 1, Variant 3
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Paige has a computer that has a central processing unit (CPU) based on the Von Neumann model for a computer system. Identify the component within the CPU that controls the flow of data. Identify the component within the CPU where calculations are carried out. Identify the component within the CPU that stores the address of the next instruction to be processed. Identify the register within the CPU that holds an instruction that has been fetched from memory. Identify the register within the CPU that holds data that has been fetched from memory.
2210_w20_qp_13
THEORY
2020
Paper 1, Variant 3
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The paragraph explains how an instruction is processed by the Central Processing Unit (CPU). Complete the paragraph using the list of terms. Not all terms in the list need to be used. • address bus • Arithmetic Logic Unit (ALU) • calculations • data bus • decoded • execute • fetched • interrupt • Memory Address Register (MAR) • Memory Data Register (MDR) • Program Counter (PC) • protocol • ROM • stored An instruction is from RAM into the CPU, where it is temporarily stored in the . The instruction is then sent along the to the Control Unit (CU) to be . The will then perform any and logic operations that are required to the instruction.
2210_w22_qp_13
THEORY
2022
Paper 1, Variant 3
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A user’s computer has a central processing unit (CPU) that has a clock speed of 2 GHz. She wants to change it to a CPU that has a clock speed of 3 GHz. State what is meant by clock speed. Explain the effect this change will have on the performance of the CPU. The CPU contains a memory address register (MAR). Describe the role of the MAR in the fetch–decode–execute cycle. The CPU has a list of all the machine code commands it can process. State the name of this list of commands.
2210_w23_qp_12
THEORY
2023
Paper 1, Variant 2
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Questions Discovered
31