Flashcards
Special Registers
Cards in this deck (5)
- 1MARMemory Address Register - Used to hold the address of the data in memory
- 2MDRMemory Data Register - Used to hold the data retrieved from memory or data to be sent to memory
- 3PCProgram Counter - Holds memory address of the next instruction. Indicates where computer is in programme sequence.
- 4AccAccumulator - Register in which results from arithmetic and logic are stored.
- 5CIRCurrent Instruction Register - Holds current instruction to be executed having been fetched from memory. Stores operator and operand for current instruction
Information
- Description
- Describes the different registers in the CPU
- Created by
- Jonathan Wakefield
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