Describe how a character string is displayed on the monitor usingassembly language. Give an example (Note: complete program is notrequired).

To display a character string on the monitor using assembly language, you would typically use a combination of system calls and string manipulation instructions. Here is an example of how you can achieve this:

1. Load the address of the character string into a register. Let's say the character string is stored at memory location "str".

2. Set up the necessary system call parameters. This typically involves loading the appropriate values into specific registers. For example, you may need to load the system call number into a register (e.g., "print_string" system call may have a specific number associated with it).

3. Make the system call. This is done by triggering an interrupt instruction, which transfers control to the operating system. The operating system then executes the requested system call.

4. The system call will take the address of the character string as a parameter and display it on the monitor.

Here is an example code snippet in assembly language (x86 syntax) that demonstrates the above steps:

section .data
    str db 'Hello, World!', 0

section .text
    global _start

_start:
    ; Load the address of the character string into a register
    mov eax, str

    ; Set up the system call parameters
    mov ebx, 1  ; File descriptor 1 represents standard output
    mov ecx, eax  ; Address of the character string

    ; Make the system call
    mov eax, 4  ; System call number for "write"
    int 0x80

    ; Exit the program
    mov eax, 1  ; System call number for "exit"
    xor ebx, ebx  ; Exit status code (0)
    int 0x80

In this example, the character string "Hello, World!" is stored in the data section of the program. The program then loads the address of the string into the eax register and sets up the necessary system call parameters. The write system call is made to display the string on the monitor. Finally, the program exits using the exit system call.

Please note that the specific instructions and system call numbers may vary depending on the assembly language and operating system you are using.