Answered: If you want to get the system date,…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

If you want to get the system date, display it, and then change it, which INT 21h functions
are required?

Expert Solution

Step 1

INT 21h FUNCTION TO GET SYSTEM DATE AND DISPLAY IT:

Interrupt function to get the system date include AH Dos command.
It is a DOS interrupt which takes the date from the system details and then takes it in the as format as is set in the device system memory.
Function to get the system date is 2Ah.
Syntax for getting system date is:
- AH = 2Ah - GET SYSTEM DATE
- It will return the date of the system be extracting it segment wise.
- Return: CX= year(1980-2099) DH = month DL = day AL = day of week

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