At these moments, the program counter is dynamically modified. In this scenario, the program counter functions as a simple incrementer.
The Program Counter: Small Indispensable Component in CPU Execution
Sequential Execution and Order For the vast majority of computing tasks, instructions are processed in a linear, sequential order. Defining the Program Counter The program counter, often abbreviated as PC, is a specific CPU register that holds the memory address of the next instruction the processor is scheduled to execute.
Instead of simply moving to the next address, the counter is loaded with a new target address specified by the jump instruction. Once the interrupt service routine is complete, the original program counter value is restored, allowing the paused process to continue as if no disruption occurred.
The Program Counter's Core Function as an Indispensable Component
This predictable incrementing is what allows programs to run line by line, from the top of a script to the bottom, without skipping a beat. This cycle repeats at staggering speeds, and the program counter is the lynchpin that guarantees continuity.
More About What does the program counter do
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