True Statement: The Current Instruction Register (CIR) holds the current instruction being executed, The Program Counter (PC) is incremented by the Control Unit, The Program Counter (PC) is modified when a branch instruction is executed, The PC is copied to the MAR in order to fetch the next instruction from memory, The MDR is copied to the CIR when an instruction is fetched from memory, False Statement: The Current Instruction Register (CIR) holds the address in memory of the current instruction, The Program Counter (PC) is copied to the Memory Address Register (MAR) when an instruction is written to memory, The Program Counter (PC) is used to fetch instructions from registers to increase the speed of a processor, The CIR is always copied to the MDR during a fetch cycle, The Control Bus is transfer data to/from memory during a read/write cycle, The MDR is used to decode an instruction into opcode and operand, The Program Counter (PC) holds the address in memory of the current instruction,

A-Level U1 Buses and Registers

by
Print
Embed

Leaderboard

Visual style

Options

Switch template

Continue editing: ?