What is the primary architectural advantage of a Microprogrammed Control Unit over a Hardwired one?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2, i.e., Ease of instruction set updates.
A Microprogrammed Control Unit uses a set of microinstructions (stored in memory) to control CPU operations. If we want to modify or add new instructions, we can simply update the microprogram (software-like change). But in a Hardwired Control Unit, changes require physical hardware modification, which is difficult and time-consuming.