These modules certify skills that are considered essential skills because they are crucial for anyone who uses a computer to possess. There are five units in the ICDL Base Module: Computer Essentials, Online Essentials, Microsoft Word, Microsoft Excel, and Microsoft Powerpoint.This module allows candidates to demonstrate the ability to use a word processing application to accomplish everyday tasks associated with creating, formatting, and finishing small-sized word processing documents, such as letters and other everyday documents.