Why branching controls program execution in ARM Architecture - Quick Recap

Recall & Review

beginner

What is branching in ARM architecture?

Branching is a way for the program to jump to a different part of the code instead of running instructions one after another. It helps the program make decisions and repeat tasks.

beginner

Why does branching control program execution?

Branching changes the order in which instructions run. It lets the program choose different paths based on conditions, making the program flexible and able to respond to different situations.

intermediate

How does a branch instruction affect the program counter (PC)?

A branch instruction updates the program counter to a new address, so the CPU starts executing instructions from that new location instead of the next sequential instruction.

beginner

What real-life example can explain branching in programs?

Think of a GPS giving directions. If you reach a fork in the road, you choose a path based on your destination. Branching in programs is like choosing which road to take based on conditions.

intermediate

Name two types of branching instructions in ARM architecture.

Two common types are unconditional branch (always jump) and conditional branch (jump only if a condition is true).

What does a branch instruction do in ARM architecture?

A Saves data to memory

B Changes the next instruction to execute

C Stops the program

D Increases the CPU speed

A branch instruction changes the program counter to jump to a different instruction address.

Why is branching important in program execution?

A It allows the program to make decisions and repeat tasks

B It makes the program run slower

C It deletes unnecessary code

D It stores variables

Branching lets the program choose different paths, enabling decisions and loops.

Which register does a branch instruction update to change program flow?

A Status Register

B Stack Pointer

C Link Register

D Program Counter

The program counter holds the address of the next instruction to execute and is updated by branch instructions.

What is a conditional branch?

A A jump that happens only if a condition is true

B A jump that always happens

C A jump that saves data

D A jump that resets the CPU

Conditional branches jump only when a specific condition is met.

Which of these is NOT a reason for using branching?

A To repeat instructions

B To make decisions

C To speed up the CPU clock

D To skip parts of code

Branching controls program flow but does not affect CPU clock speed.

Explain in your own words why branching is essential for program execution.

Think about how a program chooses what to do next.

Describe how a branch instruction affects the program counter and program flow.

Focus on what the program counter does.