4.7.3 The structure and role of the processor and its components 0.0 / 5 ? ComputingProcessor and its componentsA2/A-levelAQA Created by: A.J.CrowleyCreated on: 03-11-20 17:53 The part of the CPU that performs arithmetic computations and logical operations ArithmeticLogicUnit 1 of 21 The part of the CPU that is responsible for controlling the various components of the processor ControlUnit 2 of 21 Used as storage for any data required by instructions during execution GeneralPurposeRegisters 3 of 21 Used to hold the memory address of the next instruction to be executed ProgramCounter 4 of 21 Holds the current instruction being executed. __________________ Register. CurrentInstruction 5 of 21 Stores the memory address of a memory location that is to be read of written to. _____________ Register MemoryAddress 6 of 21 Holds the contents of a memory location that has been read from or data that is to be stored. AKA Memory Data Register. ____________ Register MemoryBuffer 7 of 21 Contains a number of bits, the values of which change to indicate the occurrence of an interrupt. ______ Register Status 8 of 21 A device that uses a timing signal to synchronise communication between the components of a processor and computer system. Clock 9 of 21 Specifies the type of operation that is to be carried out Opcode 10 of 21 The pieces of data on which an operation is performed Operand 11 of 21 The way in which the operand is interpreted AddressingMode 12 of 21 Type of addressing mode where the value specified in the operand is the actual value to be used Immediate 13 of 21 Type of addressing mode where the value specified in the operand signifies the memory location of the value to be used Direct 14 of 21 Shifting all the bits in a number to a specified number of positions the right or left LogicalShift 15 of 21 A signal that tells the operating system that it is in need of immediate attention Interrupt 16 of 21 The factor that affects the processor performance by increasing the number of FDE cycles that can happen simultaneously Cores 17 of 21 The factor that affects the processor performance by increasing the amount of frequently used instructions closer to the processor Cache 18 of 21 The factor that affects the processor performance by increasing the amount of cycles in a shortened time. Comes with a risk when increased too much ClockSpeed 19 of 21 The factor that affects the processor performance by increasing the computer's amount of addressable memory AddressBusWidth 20 of 21 The factor that affects the processor performance by increasing the volume of data that can be transferred over the bus at one time DataBusWidth 21 of 21
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