Explain the concept of loops in Assembly Language.

In Assembly Language, loops are used to repeat a set of instructions multiple times until a certain condition is met. They are essential for creating repetitive tasks and implementing control flow in programs.

There are mainly two types of loops in Assembly Language: conditional loops and unconditional loops.

1. Conditional Loops:
Conditional loops are used when the number of iterations is not known in advance. The loop continues until a specific condition is satisfied. The most commonly used conditional loop instructions are "JMP" (Jump) and "CMP" (Compare).

Here is an example of a conditional loop in Assembly Language using the "JMP" and "CMP" instructions:

```
MOV CX, 10 ; Initialize the loop counter
LOOP_START:
; Instructions to be repeated
; ...

DEC CX ; Decrement the loop counter
CMP CX, 0 ; Compare the loop counter with zero
JNZ LOOP_START ; Jump to LOOP_START if CX is not zero

; Instructions after the loop
```

In this example, the loop starts with the label "LOOP_START". The instructions within the loop are executed repeatedly until the loop counter (CX) becomes zero. The "DEC" instruction decrements the loop counter, and the "CMP" instruction compares it with zero. If the loop counter is not zero, the "JNZ" instruction jumps back to the "LOOP_START" label, continuing the loop. Once the loop counter becomes zero, the program continues with the instructions after the loop.

2. Unconditional Loops:
Unconditional loops are used when the number of iterations is known in advance or when an infinite loop is required. The most commonly used unconditional loop instruction is "JMP" (Jump).

Here is an example of an unconditional loop in Assembly Language using the "JMP" instruction:

```
MOV CX, 5 ; Initialize the loop counter
LOOP_START:
; Instructions to be repeated
; ...

DEC CX ; Decrement the loop counter
JNZ LOOP_START ; Jump to LOOP_START unconditionally

; Instructions after the loop
```

In this example, the loop starts with the label "LOOP_START". The instructions within the loop are executed repeatedly until the loop counter (CX) becomes zero. The "DEC" instruction decrements the loop counter, and the "JNZ" instruction unconditionally jumps back to the "LOOP_START" label, continuing the loop. Once the loop counter becomes zero, the program continues with the instructions after the loop.

Loops are powerful constructs in Assembly Language as they allow for efficient repetition of code and enable the implementation of complex algorithms. They provide flexibility and control over program execution, making them an essential concept in Assembly Language programming.