Final answer:
IORC and MRDC are signals in computer architecture that handle data flow: IORC concerns input/output device readiness, while MRDC relates to reading data from memory.
Step-by-step explanation:
The difference between the IORC (Input/Output Ready Control) and MRDC (Memory Read Control) signals is foundational to understanding computer architecture.
The IORC signal is used by a computer's processor to indicate when it is ready to receive data from an input/output device. On the other hand, MRDC is a signal used to read data from memory.
These two signals are central to managing data flow between the processor, peripherals, and memory, ensuring that data is correctly moved to where it is needed in the system.